High severity7.5NVD Advisory· Published Aug 25, 2021· Updated Jun 17, 2026

CVE-2021-40083

Description

Knot Resolver before 5.3.2 is prone to an assertion failure, triggerable by a remote attacker in an edge case (NSEC3 with too many iterations used for a positive wildcard proof).

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Knot Resolver/Knot Resolverdescription
Cz Nic/Knot Resolverllm-create
Range: <5.3.2

Patches

Vulnerability mechanics

References

gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1169nvdPatchThird Party Advisory

News mentions

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