CVE-2026-13204

Published: Jul 22, 2026Modified: Oct 24, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: security-officer@isc.org (Secondary)

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.

Related CWEs

CWE-617

Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

References (3)

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

Source: security-officer@isc.org

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

Source: security-officer@isc.org

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

Source: security-officer@isc.org

Timeline

No history available yet.