CVE catalog
CVE-2026-27856
Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential wil
- Severity
- High · CVSS 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | dovecot | sid | 1:2.4.5+dfsg1-4 | fixed |
| Debian | dovecot | forky | 1:2.4.5+dfsg1-4 | fixed |
| Debian | dovecot | trixie | 1:2.4.1+dfsg1-6+deb13u6 | fixed |
| Debian | dovecot | trixie-security | 1:2.4.1+dfsg1-6+deb13u7 | fixed |
| Debian | dovecot | bookworm | 1:2.3.19.1+dfsg1-2.1+deb12u6 | fixed |
| Debian | dovecot | bookworm-security | 1:2.3.19.1+dfsg1-2.1+deb12u6 | fixed |
| Cpe | dovecot | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-auth-lua | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-core | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-dev | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-gssapi | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-imapd | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-ldap | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-lmtpd | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-managesieved | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-mysql | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-pgsql | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-pop3d | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-sieve | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-solr | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-sqlite | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot-submissiond | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Cpe | dovecot | Not reported | 2.4.3 | fixed |
| Cpe | dovecot | Not reported | 2.3.22.1 | fixed |
| Cpe | dovecot | Not reported | 3.0.5 | fixed |
| Cpe | dovecot | Not reported | 3.1.4 | fixed |
| Cpe | dovecot | Not reported | 1:2.3.19.1+dfsg1-2.1+deb12u2 | fixed |
| Alpine | dovecot | 3.23 | 2.4.3-r0 | fixed |
| Alpine | dovecot | 3.24 | 2.4.3-r0 | fixed |
| Ubuntu | dovecot | 20.04 | 1:2.3.4.1-5ubuntu3 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu1 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu2 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.1 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.2 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.3 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.4 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.5 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.6 | vulnerable |
| Ubuntu | dovecot | 20.04 | 1:2.3.7.2-1ubuntu3.7 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.13+dfsg1-1ubuntu3 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu1 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.1 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.2 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.4 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.6 | vulnerable |
| Ubuntu | dovecot | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.7 | fixed |
| Ubuntu | dovecot | 24.04 | 1:2.3.20+dfsg1-1ubuntu3 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu1 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu2 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu4 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu5 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu6 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu6.1 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu6.2 | vulnerable |
| Ubuntu | dovecot | 24.04 | 1:2.3.21+dfsg1-2ubuntu6.3 | fixed |
| Ubuntu | dovecot | 25.10 | 1:2.3.21.1+dfsg1-1ubuntu2 | vulnerable |
| Ubuntu | dovecot | 25.10 | 1:2.4.1+dfsg1-5ubuntu1 | vulnerable |
| Ubuntu | dovecot | 25.10 | 1:2.4.1+dfsg1-5ubuntu3 | vulnerable |
| Ubuntu | dovecot | 25.10 | 1:2.4.1+dfsg1-5ubuntu4 | vulnerable |
| Ubuntu | dovecot | 25.10 | 1:2.4.1+dfsg1-5ubuntu4.1 | fixed |
| Cpe | dovecot | Not reported | 3.1.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | dovecot | source | sid | 1:2.4.3+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Debian | dovecot | source | forky | 1:2.4.3+dfsg1-1 | not yet assigned | Not reported | Not reported |
| Debian | dovecot | source | trixie | 1:2.4.1+dfsg1-6+deb13u4 | not yet assigned | Not reported | Not reported |
| Debian | dovecot | source | bookworm | 1:2.3.19.1+dfsg1-2.1+deb12u2 | not yet assigned | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-auth-lua | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-core | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-dev | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-gssapi | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-imapd | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-ldap | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-lmtpd | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-managesieved | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-mysql | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-pgsql | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-pop3d | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-sieve | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-solr | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-sqlite | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot-submissiond | cpe | Not reported | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 2.4.3 | Not reported | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 2.3.22.1 | Not reported | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 3.0.5 | Not reported | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 3.1.4 | Not reported | Not reported | Not reported |
| Cpe | dovecot | cpe | Not reported | 1:2.3.19.1+dfsg1-2.1+deb12u2 | Not reported | Not reported | Not reported |
| Alpine | dovecot | apk | 3.23 | 2.4.3-r0 | Not reported | ALPINE-CVE-2026-27856 | Not reported |
| Alpine | dovecot | apk | 3.24 | 2.4.3-r0 | Not reported | ALPINE-CVE-2026-27856 | Not reported |
| Ubuntu | dovecot | deb | 22.04 | 1:2.3.16+dfsg1-3ubuntu2.7 | Not reported | UBUNTU-CVE-2026-27856 | Not reported |
| Ubuntu | dovecot | deb | 24.04 | 1:2.3.21+dfsg1-2ubuntu6.3 | Not reported | UBUNTU-CVE-2026-27856 | Not reported |
| Ubuntu | dovecot | deb | 25.10 | 1:2.4.1+dfsg1-5ubuntu4.1 | Not reported | UBUNTU-CVE-2026-27856 | Not reported |
| Cpe | dovecot | cpe | Not reported | 3.1.4 | Not reported | NVD-CVE-2026-27856 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [dovecot-auth-lua]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-core]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-dev]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-gssapi]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-imapd]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-ldap]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-lmtpd]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-lucene]Fixed
Source package: [dovecot]
Details (4)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-managesieved]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-mysql]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-pgsql]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-pop3d]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-sieve]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-solr]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-sqlite]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
- [dovecot-submissiond]Fixed
Source package: [dovecot]
Details (6)
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookwormFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.21.1+dfsg1-1~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· amd64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
1:2.3.19.1+dfsg1-2.1+deb12u6· arm64 · bookworm-securityFixed · Fixed:
1:2.3.19.1+dfsg1-2.1+deb12u2nvd · dovecot · debian · bookworm; nvd · dovecot · debian · 12
[Debian 13 (Trixie)]
- [dovecot-auth-lua]Fixed
Source package: [dovecot]
Details (5)
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u7· amd64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
- [dovecot-core]Fixed
Source package: [dovecot]
Details (5)
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u7· amd64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
- [dovecot-dev]Fixed
Source package: [dovecot]
Details (5)
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u7· amd64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
- [dovecot-flatcurve]Fixed
Source package: [dovecot]
Details (5)
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixieFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u6· arm64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
1:2.4.1+dfsg1-6+deb13u7· amd64 · trixie-securityFixed · Fixed:
1:2.4.1+dfsg1-6+deb13u4nvd · dovecot · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:26564]
- [https://access.redhat.com/security/cve/CVE-2026-27856]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2452171]
- [https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_4139-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-27856]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-27856]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-27856]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-27856]
- [https://security-tracker.debian.org/tracker/CVE-2026-27856]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27856.json]
- [https://ubuntu.com/security/notices/USN-8136-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0891.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]