CVE-2026-52684 Affecting pdns-recursor package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-PDNSRECURSOR-18280554
- published24 Jul 2026
- disclosed23 Jul 2026
Introduced: 23 Jul 2026
CVE-2026-52684 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable pdns-recursor.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pdns-recursor package and not the pdns-recursor package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the child records are used immediately if not expired and thus valid, or the records are expired, and in that case not used. So this case can only happen if almost expired records are used to refresh the authoritative NS records.