CVE-2026-3119

MEDIUM

Authenticated query containing a TKEY record may cause named to terminate unexpectedly

Title source: cna

Description

Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record. The affected code can only be reached if an incoming request has a valid transaction signature (TSIG) from a key declared in the `named` configuration. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.

References (3)

[Vendor Advisory] https://kb.isc.org/docs/cve-2026-3119

[Patch] https://downloads.isc.org/isc/bind9/9.20.21

[Patch] https://downloads.isc.org/isc/bind9/9.21.20

Scores

CVSS v3 6.5

EPSS 0.0001

EPSS Percentile 2.3%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-617

Status published

Products (5)

ISC/BIND 9 9.18.0 - 9.18.46

ISC/BIND 9 9.18.11-S1 - 9.18.46-S1

ISC/BIND 9 9.20.0 - 9.20.20

ISC/BIND 9 9.20.9-S1 - 9.20.20-S1

ISC/BIND 9 9.21.0 - 9.21.19

Published Mar 25, 2026

Tracked Since Mar 25, 2026