AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-40083

HIGH · CVSS 7.5 EPSS 1.42%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-25 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable.

CVE
CVE-2021-40083
Severity
HIGH
CVSS
7.5
EPSS
1.42%

Original NVD 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).

Related CVEs

Other vulnerabilities affecting the same vendor(s)