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MEDIUM · 5.3

CVE-2026-6450

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...

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
WolfsslWolfssl>= 4.3.0, < 5.9.2

Related Weaknesses (CWE)

CWE-295

References

FAQ

What is CVE-2026-6450?

CVE-2026-6450 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...

How severe is CVE-2026-6450?

CVE-2026-6450 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-6450?

Check the references section above for vendor advisories and patch information. Affected products include: Wolfssl Wolfssl.