CVE-2026-12245
CVE-2026-12245 · Denial of DNS over TLS service by any DoT client
This page contains facts from public vulnerability sources. Check the original advisory before updating.
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.
CVSS 8.7 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
nsd
- Versions
- ≥ 4.13.0, < 4.14.3: Affected (semver)
Update to 4.14.3
nsd Debian:14
- Versions
- 4.12.0-1
- 4.12.0-2
- 4.13.0-1
- 4.13.0-2
- 4.13.0-3
- 4.13.0-4
- 4.13.0-5
- 4.13.0-6
- 4.14.0-1
- 4.14.1-1
- 4.14.2-1
- Affected ranges
- ECOSYSTEM: < 4.14.3-1
Update to 4.14.3-1
nsd Ubuntu:25.10
- Versions
- 4.11.1-1
- 4.12.0-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nsd Ubuntu:26.10
- Versions
- 4.14.0-1
- 4.14.2-1
- 4.14.3-1
- 4.15.0-1
- 4.15.0-1build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nsd Ubuntu:Pro:26.04:LTS
- Versions
- 4.12.0-1
- 4.13.0-6
- 4.14.0-1
- Affected ranges
- ECOSYSTEM: < 4.14.0-1ubuntu0.1~esm1
Update to 4.14.0-1ubuntu0.1~esm1