CVE-2026-66374
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductKnot Resolver
PublishedJul 25, 2026
First seenJul 25, 2026
Weakness typeCWE-1284CWE-1284
How to fix
Update
- nic Knot Resolver6.4.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nic Knot Resolver | v < 6.4.1 | 6.4.1 |
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