CVE-2026-66374
CVE-2026-66374
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path.
CVSS 8.1 · High · EPSS 0.6% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
knot resolver
- Versions
- ≥ 0, < 6.4.1: Affected (semver)
Update to 6.4.1
knot-resolver Debian:14
- Versions
- 5.7.5-1
- 6.0.10-1
- 6.0.12-1
- 6.0.13-1
- 6.0.14-1
- 6.0.15-1
- 6.0.15-2
- 6.0.15-3
- 6.0.15-4
- 6.0.17-1
- 6.0.9-1
- 6.1.0-1
- 6.1.0-2
- 6.2.0-1
- 6.2.0-2
- 6.3.0-1
- 6.4.0-1
- Affected ranges
- ECOSYSTEM: < 6.4.1-1
Update to 6.4.1-1
knot-resolver Ubuntu:Pro:16.04:LTS
- Versions
- 1.0.0~beta2-123-g6134920-1
- 1.0.0~beta3-1
- 1.0.0~beta3-1ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:Pro:18.04:LTS
- Versions
- 1.3.3-1
- 1.5.0-4
- 1.5.1-1
- 1.5.2-1
- 2.0.0-3
- 2.1.0-1
- 2.1.0-2
- 2.1.1-1
- 2.1.1-1ubuntu0.1~esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:20.04:LTS
- Versions
- 3.2.1-3
- 3.2.1-3ubuntu1
- 3.2.1-3ubuntu2
- 3.2.1-3ubuntu2.1
- 3.2.1-3ubuntu2.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:Pro:22.04:LTS
- Versions
- 5.3.1-1
- 5.4.2-1
- 5.4.3-1
- 5.4.4-1
- 5.4.4-1ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:24.04:LTS
- Versions
- 5.6.0-1.1
- 5.7.0-1build1
- 5.7.1-1
- 5.7.2-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
knot-resolver Ubuntu:26.04:LTS
- Versions
- 5.7.5-1
- 6.0.15-4build1
- 6.0.17-1
- 6.2.0-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published