CVE-2026-6450

EUVD-2026-39559
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
wolfSSLCNA
1 LOW
ADJACENT
HIGH
HIGH
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
wolfsslwolfssl
4.3.0 ≤
𝑥
≤ 5.9.1
CNA
Common Weakness Enumeration
References
https://github.com/wolfSSL/wolfssl/pull/10239
https://www.wolfssl.com/docs/security-vulnerabilities/