CRL critical extension bypass in ParseCRL_Extensions_CVE-2026-6450

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LOW

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

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.

Basic Information

ID CVE-2026-6450

Source wolfSSL

Published Jun 25, 2026 at 20:18

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 4.3.0

Affected Versions wolfSSL wolfSSL 4.3.0

CWE Classification

CWE-295

References

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    "lastseen": "",
    "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.",
    "published": "2026-06-25T20:18:53.909Z",
    "modified": "2026-06-25T20:18:53.909Z",
    "type": "cve",
    "title": "CRL critical extension bypass in ParseCRL_Extensions",
    "source": "wolfSSL",
    "references": "https://github.com/wolfSSL/wolfssl/pull/10239\nhttps://www.wolfssl.com/docs/security-vulnerabilities/",
    "id": "CVE-2026-6450",
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    "sourceData": "wolfSSL wolfSSL 4.3.0",
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