CVE-2026-13204

Description

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

References

https://kb.isc.org/docs/cve-2026-13204

https://downloads.isc.org/isc/bind9/9.21.24

https://downloads.isc.org/isc/bind9/9.20.26

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3