CVE-2026-6450

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductWolfssl

PublishedJun 25, 2026

First seenJun 25, 2026

Weakness typeCWE-295CWE-295

How to fix

Update

wolfssl wolfssl5.9.2 or later

Patches

github.com/wolfSSL/wolfssl/pull/10239

Affected products

Product	Affected versions	Fixed in
wolfssl wolfssl	4.3.0 ≤ v < 5.9.2	5.9.2

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