CVE-2026-76163

named aborts on a TKEY query when the user configuration has no global options statement

CVE-2026-76163 is fixed in 6 products on 1 platform, first by bind9 1:9.20.24-1ubuntu0.4, released September 16, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0057

47th percentile

If BIND is loaded with a "`named.conf`" file that contains no global "`options`" block, an attacker can send a query of QTYPE TKEY which may cause an assertion failure and subsequent unexpected program exit. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
bind · opensuse-leap 16.0	9.20.29-160000.1.1	OPENSUSE-SU-2026:22049-1	Oct 7, 2026
bind · sles 15.7	9.20.29-150700.3.32.2	SUSE-SU-2026:4285-1	Sep 22, 2026
bind · sles 16.0	9.20.29-160000.1.1	SUSE-SU-2026:24157-1	Oct 7, 2026
bind9 · Debian 13.5 (trixie)	1:9.20.29-1~deb13u1	DEBIAN-CVE-2026-76163	Sep 18, 2026
bind9 · Debian 14	1:9.20.29-1	DEBIAN-CVE-2026-76163	Sep 18, 2026
bind9 · Ubuntu 26.04.1 LTS (resolute)	1:9.20.24-1ubuntu0.4	bind9 1:9.20.24-1ubuntu0.4	Sep 16, 2026
bind9-dnsutils · Ubuntu 26.04.1 LTS (resolute)	1:9.20.24-1ubuntu0.4	bind9-dnsutils 1:9.20.24-1ubuntu0.4	Sep 16, 2026
bind9-host · Ubuntu 26.04.1 LTS (resolute)	1:9.20.24-1ubuntu0.4	bind9-host 1:9.20.24-1ubuntu0.4	Sep 16, 2026
bind9-libs · Ubuntu 26.04.1 LTS (resolute)	1:9.20.24-1ubuntu0.4	bind9-libs 1:9.20.24-1ubuntu0.4	Sep 16, 2026
bind9-utils · Ubuntu 26.04.1 LTS (resolute)	1:9.20.24-1ubuntu0.4	bind9-utils 1:9.20.24-1ubuntu0.4	Sep 16, 2026

Details

Published
September 16, 2026
Weakness
Reachable Assertion
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-76163

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