CVE-2026-3338 | THREATINT

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.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-02 | Updated 2026-03-02 | Assigner AMZN

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-347 (Improper Verification of Cryptographic Signature)

Product status

Default status

unaffected

1.41.0 (custom) before 1.69.0

affected

References

aws.amazon.com/security/security-bulletins/2026-005-AWS/ vendor-advisory

github.com/aws/aws-lc/releases/tag/v1.69.0 patch

github.com/...aws-lc/security/advisories/GHSA-jchq-39cv-q4wj third-party-advisory

cve.org (CVE-2026-3338)

nvd.nist.gov (CVE-2026-3338)

Download JSON