CVE-2026-52684 — LOW (3.7) — White Hats Nepal

Vulnerability 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 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

References

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

FAQ

What is CVE-2026-52684?

CVE-2026-52684 is a vulnerability with a CVSS score of 3.7 (LOW). 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 us...

How severe is CVE-2026-52684?

CVE-2026-52684 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-52684?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.