This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-13321 →

DEBIAN-CVE-2026-13321

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 v...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 bind9

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.18.49-1~deb12u2"}]}]

Debian:13 bind9

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.26-1~deb13u1"}]}]

Debian:14 bind9

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.26-1"}]}]

References

advisory security-tracker.debian.org