CVE-2026-6450

Name: CVE-2026-6450
Creator: NVD / NIST
Published: 2026-06-25T21:16:27.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1/10EPSS 0.14%

Last modified Jun 26, 2026

CVE-2026-6450 is a low-severity vulnerability rated 1/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0

1/10

CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.14%

3.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

References

Timeline

Published: Jun 25, 2026
Last Modified: Jun 26, 2026
Status: Undergoing Analysis

Frequently Asked Questions

What is CVE-2026-6450?

How severe is CVE-2026-6450?

CVE-2026-6450 has a CVSS score of 1/10 (LOW severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6450?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6450?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST