CVE-2026-66374

HIGH

8.1

CVSS 3.1

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.

CVE ID: CVE-2026-66374
State: PUBLISHED
Assigner: mitre
Reserved: 2026-07-25 00:28 UTC
Published: 2026-07-25 00:28 UTC
Last updated: 2026-07-25 00:28 UTC
Primary CWE: CWE-1284
CWE-1284 Improper Validation of Specified Quantity in Input
Vendor / Product: nic / Knot Resolver
Sources: cve.org · NVD

8.1 HIGH CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
nic	Knot Resolver	—	0 < 6.4.1

Weakness (CWE)

CWE	Source	Description
CWE-1284	cna	CWE-1284 Improper Validation of Specified Quantity in Input

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L

References (2)