Unrated severityNVD Advisory· Published Mar 2, 2026· Updated Mar 3, 2026
PKCS7_verify Signature Validation Bypass in AWS-LC
CVE-2026-3338
Description
Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes.
Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
Affected products
2- AWS/AWS-LCv5Range: 1.41.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/aws/aws-lc/releases/tag/v1.69.0mitrepatch
- aws.amazon.com/security/security-bulletins/2026-005-AWS/mitrevendor-advisory
- github.com/aws/aws-lc/security/advisories/GHSA-jchq-39cv-q4wjmitrethird-party-advisory
News mentions
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