CVE-2026-42389
5.3
MEDIUM
CVSS 3.1
EPSS 0.18%
Description
This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.
How to fix CVE-2026-42389
To remediate CVE-2026-42389, upgrade the affected package to a fixed version below.
- Debian/pdns-recursor—upgrade to 5.4.3-1 or later
Is CVE-2026-42389 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 5.4.3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |