CVE-2026-52684
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
A DNS issue occurs when the authoritative server responds very slowly and records expire in the meantime. In this case, TTL capping is not enforced due to lack of data. This does not happen during normal resolution.
Risk Assessment
This can lead to the use of stale NS records, potentially redirecting traffic to unauthorized servers and enabling DNS spoofing attacks.
Recommendation
Monitor authoritative server response times and implement record refresh mechanisms before expiration.
Original NVD description (English source)
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.