CVE-2026-66374

State: Published
Severity: 8.1 High
Published: Jul 25, 2026
Updated: Jul 27, 2026
Reserved: Jul 25, 2026

Description

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L	mitre

Weaknesses

CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
Knot Resolvernic	before 6.4.1Affected

References

https://openwall.com/lists/oss-security/2026/07/23/6
https://github.com/venglin/knot-doq

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