CVE-2026-6450

MEDIUM

wolfSSL - CRL Critical Extension Bypass in ParseCRL_Extensions

Title source: rule

Description

A CRL critical extension bypass exists in ParseCRL_Extensions where critical extensions are not properly enforced, allowing a crafted CRL with an unhandled critical extension to be accepted. This only affects builds with CRL support enabled and where a crafted CRL had a trusted signature when parsed.

References (2)

Core 2

Core References

Patch patch

https://github.com/wolfSSL/wolfssl/pull/10239

https://www.wolfssl.com/docs/security-vulnerabilities/

Scores

CVSS v3 5.3

EPSS 0.0018

EPSS Percentile 7.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-295

Status published

Products (2)

wolfSSL/wolfSSL 4.3.0 - 5.9.1

wolfssl/wolfssl 4.3.0 - 5.9.2

Published Jun 25, 2026

Tracked Since Jun 26, 2026