CVE-2026-4428CRL Distribution Point Scope Check Logic Error in AWS-LC

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://aws.amazon.com/security/security-bulletins/2026-010-AWS/ vendor-advisory
• https://github.com/aws/aws-lc/releases/tag/v1.71.0 patch