CVE-2026-4428: AWS-LC: AWS-LC: Security bypass allows revoked certificates to be accepted due to CRL validation error

Severity: Critical

CVSS Score: 7.4

A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks. To remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.