VulnerabilityAwaiting Analysis

CVE-2026-52684

If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data.

LOW 3.7EPSS 0.14%

Does this matter?

Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1: 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.14% probability · 4th percentile
CISA KEV: Not listed
Source: security@open-xchange.com

References

https://github.com/PowerDNS/pdns/pull/17748

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.