Is CVE-2026-66374 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-66374?

CVE-2026-66374 has a CVSS v3 severity of HIGH (8.1).

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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.