VULNERABILITY INTELLIGENCE
CVE-2026-52686
CVSS score3.7 LOW
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-07-23
Last modified2026-10-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Description
The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer is a CNAME or DNAME record.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-347