CVE catalog
CVE-2019-25042
unbound: CVE-2019-25042
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.88% · Oct 25, 2026
Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
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 | unbound | sid | 1.26.2-1 | fixed |
| Debian | unbound | forky | 1.26.2-1 | fixed |
| Debian | unbound | trixie | 1.22.0-2+deb13u3 | fixed |
| Debian | unbound | trixie-security | 1.26.2-0+deb13u1 | fixed |
| Debian | unbound | bookworm | 1.17.1-2+deb12u4 | fixed |
| Debian | unbound | bookworm-security | 1.17.1-2+deb12u3 | fixed |
| Ubuntu | unbound | 18.04 | 1.6.5-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1build1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.3 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.4 | fixed |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | unbound | source | sid | 1.9.6-1 | unimportant | Not reported | Not reported |
| Debian | unbound | source | forky | 1.9.6-1 | unimportant | Not reported | Not reported |
| Debian | unbound | source | trixie | 1.9.6-1 | unimportant | Not reported | Not reported |
| Debian | unbound | source | bookworm | 1.9.6-1 | unimportant | Not reported | Not reported |
| Ubuntu | unbound | deb | 18.04 | 1.6.7-1ubuntu2.4 | Not reported | UBUNTU-CVE-2019-25042 | Not reported |
| Ubuntu | unbound | deb | 20.04 | 1.9.4-2ubuntu1.2 | Not reported | UBUNTU-CVE-2019-25042 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libunbound8]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [libunbound-dev]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [python3-unbound]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound]Unknown
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound-anchor]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound-host]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
[Debian 13 (Trixie)]
- [libunbound8]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
- [libunbound-dev]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
- [python3-unbound]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
- [unbound]Unknown
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
- [unbound-anchor]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
- [unbound-host]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.9.6-1dsa · unbound · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2021:1853]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_1853.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2019-25042]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2019-25042]
- [https://security-tracker.debian.org/tracker/CVE-2019-25042]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]