CVE-2026-13204

7.5 HIGH
Published: July 22, 2026 Modified: July 22, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
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

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)