CVE-2026-66374

Summary

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

Affected Software

Weaknesses

• CWE-1284: CWE-1284 Improper Validation of Specified Quantity in Input

References

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

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