PT-2026-64452 · Nic · Knot Resolver

CVE-2026-66374 · Published 2026-07-25 · Updated 2026-07-25

NVD

CVSS v3.1

8.1

High

Base vector

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

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

Fix

Weakness Enumeration

CWE-1284

Related Identifiers

CVE-2026-66374

Affected Products

Knot Resolver

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-66374 · Security Note
• https://openwall.com/lists/oss-security/2026/07/23/6 · Note
• https://github.com/venglin/knot-doq · Note