CVE catalog
CVE-2020-28896
NeoMutt vulnerabilities
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.35% · Oct 25, 2026
Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle.
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 | mutt | sid | 2.4.1-1.1 | fixed |
| Debian | mutt | forky | 2.4.1-1 | fixed |
| Debian | mutt | trixie | 2.2.13-1+deb13u1 | fixed |
| Debian | mutt | trixie-security | 2.2.13-1+deb13u2 | fixed |
| Debian | mutt | bookworm | 2.2.12-0.1~deb12u1 | fixed |
| Debian | mutt | bookworm-security | 2.2.9-1+deb12u1 | fixed |
| Debian | neomutt | sid | 20260616+dfsg-1 | fixed |
| Debian | neomutt | forky | 20260616+dfsg-1 | fixed |
| Debian | neomutt | trixie | 20250510+dfsg-2 | fixed |
| Debian | neomutt | bookworm | 20220429+dfsg1-4.1 | fixed |
| Ubuntu | neomutt | noble | 20231103+dfsg1-1ubuntu0.1~esm1 | fixed |
| Ubuntu | mutt | 16.04 | 1.5.23-3.1ubuntu1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.23-3.1ubuntu2 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1build1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.3 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.4 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.5 | fixed |
| Ubuntu | mutt | 18.04 | 1.8.3+neomutt20170609-2build1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-4 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-5 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.2-1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.3-1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.4 | fixed |
| Ubuntu | mutt | 20.04 | 1.10.1-2.1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.12.2-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.12.2-2 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.0-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.3 | fixed |
| Opensuse | mutt | leap 15.2 | 1.10.1-lp152.3.6.1 | fixed |
| Opensuse | mutt | leap 15.1 | 1.10.1-lp151.2.6.1 | fixed |
| Suse | mutt | linux enterprise module for basesystem 15 sp1 | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise module for basesystem 15 sp2 | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise high performance computing 15-espos | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise high performance computing 15-ltss | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise server 15-ltss | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise server for sap applications 15 | 1.10.1-3.11.1 | fixed |
| Suse | mutt | linux enterprise point of sale 11 sp3 | 1.5.17-42.56.1 | fixed |
| Suse | mutt | linux enterprise server 11 sp4-ltss | 1.5.17-42.56.1 | fixed |
| Ubuntu | mutt | 16.04 | 1.5.23-3.1ubuntu1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.23-3.1ubuntu2 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1build1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.3 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.4 | vulnerable |
| Ubuntu | mutt | 16.04 | 1.5.24-1ubuntu0.5 | fixed |
| Ubuntu | mutt | 18.04 | 1.8.3+neomutt20170609-2build1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-4 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.1-5 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.2-1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.3-1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.3 | vulnerable |
| Ubuntu | mutt | 18.04 | 1.9.4-3ubuntu0.4 | fixed |
| Ubuntu | neomutt | pro | 20180716+dfsg.1-1.2 | vulnerable |
| Ubuntu | neomutt | pro | 20191111+dfsg.1-1 | vulnerable |
| Ubuntu | neomutt | pro | 20191207+dfsg.1-1.1 | vulnerable |
| Ubuntu | neomutt | pro | 20191207+dfsg.1-1.1ubuntu0.1~esm1 | fixed |
| Ubuntu | mutt | 20.04 | 1.10.1-2.1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.12.2-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.12.2-2 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.0-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.1 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.2 | vulnerable |
| Ubuntu | mutt | 20.04 | 1.13.2-1ubuntu0.3 | fixed |
| Suse | mutt | hpe helion openstack 8 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | openstack cloud 7 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | openstack cloud 8 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | openstack cloud 9 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | openstack cloud crowbar 8 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | openstack cloud crowbar 9 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server for sap applications 12 sp2 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server for sap applications 12 sp3 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server for sap applications 12 sp4 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp2-ltss | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp2-bcl | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp3-ltss | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp3-bcl | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp4-ltss | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server 12 sp5 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | linux enterprise server for sap applications 12 sp5 | 1.10.1-55.18.1 | fixed |
| Suse | mutt | enterprise storage 5 | 1.10.1-55.18.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mutt | source | sid | 2.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | mutt | source | forky | 2.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | mutt | source | trixie | 2.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | mutt | source | bookworm | 2.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | neomutt | source | sid | 20201120+dfsg.1-1 | not yet assigned | Not reported | Not reported |
| Debian | neomutt | source | forky | 20201120+dfsg.1-1 | not yet assigned | Not reported | Not reported |
| Debian | neomutt | source | trixie | 20201120+dfsg.1-1 | not yet assigned | Not reported | Not reported |
| Debian | neomutt | source | bookworm | 20201120+dfsg.1-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | neomutt | deb | noble | 20231103+dfsg1-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Ubuntu | mutt | deb | 16.04 | 1.5.24-1ubuntu0.5 | Not reported | USN-4645-1 | Not reported |
| Ubuntu | mutt | deb | 18.04 | 1.9.4-3ubuntu0.4 | Not reported | USN-4645-1 | Not reported |
| Ubuntu | mutt | deb | 20.04 | 1.13.2-1ubuntu0.3 | Not reported | USN-4645-1 | Not reported |
| Opensuse | mutt | rpm | leap 15.2 | 1.10.1-lp152.3.6.1 | Not reported | OPENSUSE-SU-2020:2141-1 | Not reported |
| Opensuse | mutt | rpm | leap 15.1 | 1.10.1-lp151.2.6.1 | Not reported | OPENSUSE-SU-2020:2128-1 | Not reported |
| Suse | mutt | rpm | linux enterprise module for basesystem 15 sp1 | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise module for basesystem 15 sp2 | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise high performance computing 15-espos | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise high performance computing 15-ltss | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 15-ltss | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server for sap applications 15 | 1.10.1-3.11.1 | Not reported | SUSE-SU-2020:3568-1 | Not reported |
| Suse | mutt | rpm | linux enterprise point of sale 11 sp3 | 1.5.17-42.56.1 | Not reported | SUSE-SU-2020:14551-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 11 sp4-ltss | 1.5.17-42.56.1 | Not reported | SUSE-SU-2020:14551-1 | Not reported |
| Ubuntu | mutt | deb | 16.04 | 1.5.24-1ubuntu0.5 | Not reported | UBUNTU-CVE-2020-28896 | Not reported |
| Ubuntu | mutt | deb | 18.04 | 1.9.4-3ubuntu0.4 | Not reported | UBUNTU-CVE-2020-28896 | Not reported |
| Ubuntu | neomutt | deb | pro | 20191207+dfsg.1-1.1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2020-28896 | Not reported |
| Ubuntu | mutt | deb | 20.04 | 1.13.2-1ubuntu0.3 | Not reported | UBUNTU-CVE-2020-28896 | Not reported |
| Suse | mutt | rpm | hpe helion openstack 8 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | openstack cloud 7 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | openstack cloud 8 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | openstack cloud 9 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | openstack cloud crowbar 8 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | openstack cloud crowbar 9 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server for sap applications 12 sp2 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server for sap applications 12 sp3 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server for sap applications 12 sp4 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp2-ltss | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp2-bcl | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp3-ltss | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp3-bcl | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp4-ltss | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server 12 sp5 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | linux enterprise server for sap applications 12 sp5 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
| Suse | mutt | rpm | enterprise storage 5 | 1.10.1-55.18.1 | Not reported | SUSE-SU-2020:3632-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [mutt]Unknown
Details (4)
2.2.12-0.1~deb12u1· amd64 · bookwormFixed · Fixed:
2.0.2-1usn · mutt · debian · bookworm; usn · mutt · debian · 12
2.2.12-0.1~deb12u1· arm64 · bookwormFixed · Fixed:
2.0.2-1usn · mutt · debian · bookworm; usn · mutt · debian · 12
2.2.9-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
2.0.2-1usn · mutt · debian · bookworm; usn · mutt · debian · 12
2.2.9-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
2.0.2-1usn · mutt · debian · bookworm; usn · mutt · debian · 12
- [neomutt]Unknown
Details (4)
20220429+dfsg1-4.1· amd64 · bookwormFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · bookworm; usn · neomutt · debian · 12
20220429+dfsg1-4.1· arm64 · bookwormFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · bookworm; usn · neomutt · debian · 12
20250510+dfsg-2~bpo12+1· amd64 · bookworm-backportsFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · bookworm; usn · neomutt · debian · 12
20250510+dfsg-2~bpo12+1· arm64 · bookworm-backportsFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · bookworm; usn · neomutt · debian · 12
[Debian 13 (Trixie)]
- [mutt]Unknown
Details (3)
2.2.13-1+deb13u1· amd64 · trixieFixed · Fixed:
2.0.2-1usn · mutt · debian · 13
2.2.13-1+deb13u1· arm64 · trixieFixed · Fixed:
2.0.2-1usn · mutt · debian · 13
2.2.13-1+deb13u2· amd64 · trixie-securityFixed · Fixed:
2.0.2-1usn · mutt · debian · 13
- [neomutt]Unknown
Details (4)
20250510+dfsg-2· amd64 · trixieFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · 13
20250510+dfsg-2· arm64 · trixieFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · 13
20260105+dfsg-1~bpo13+1· amd64 · trixie-backportsFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · 13
20260105+dfsg-1~bpo13+1· arm64 · trixie-backportsFixed · Fixed:
20201120+dfsg.1-1usn · neomutt · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2021:4181]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_4181.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-28896]
- [https://osv.dev/vulnerability/DLA-2472-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:14551-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:3568-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:3632-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-28896]
- [https://osv.dev/vulnerability/USN-4645-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:2128-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:2141-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-28896]
- [https://ubuntu.com/security/notices/USN-7204-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2022-2241.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]