CVE-2026-80274

Name of the Vulnerable Software and Affected Versions BIND 9 versions 9.11.0 through 9.18.50 BIND 9 versions 9.20.0 through 9.20.27 BIND 9 versions 9.21.0 through 9.21.25 BIND 9 versions 9.11.3-S1 through 9.18.50-S1 BIND 9 versions 9.20.9-S1 through 9.20.27-S1

Description A BIND resolver may experience an unexpected program exit when querying a DNSSEC-signed authoritative zone. This occurs if the authoritative server responds with a valid wildcard answer and a signed NSEC3 proof, followed by an unsigned NSEC at the same owner name.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.