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CVE-2026-3119

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

Published: Mar 25, 2026Updated: May 21, 2026 Sources: CVE List NVDCWE-617
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.6%
Top 57.1%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-617

Affected Products

BIND 9ISCNetworking Infrastructure
bindiscNetworking Infrastructure
isccommercialUSNetworking Infrastructureaka internet systems consortium

Attack Graph

Products CVE Techniques Tactics

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Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://kb.isc.org/docs/cve-2026-3119
kb.isc.org
https://downloads.isc.org/isc/bind9/9.20.21
downloads.isc.org
https://downloads.isc.org/isc/bind9/9.21.20
downloads.isc.org

Timeline

Published
Mar 25, 2026
Last Updated
May 21, 2026

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