CVE-2026-13321

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

8.6

Vector

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

Exploitability: 3.9 / Impact: 4.0

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

Description

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. 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-346

Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

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-2026-13321

Source: security-officer@isc.org

Timeline

No history available yet.