CVE-2026-3119

6.5 MEDIUM

Under certain conditions, `named` may crash when processing a correctly signed query containing a TKEY record

Published: 2026-03-25 · Last updated: 2026-05-21

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-617

Affected products

Vendor	Product
isc	bind

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-3119
[Patch]https://downloads.isc.org/isc/bind9/9.20.21
[Patch]https://downloads.isc.org/isc/bind9/9.21.20
[Vendor advisory]https://kb.isc.org/docs/cve-2026-3119

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