CVE-2026-3338

Published: Mar 2, 2026

Modified: Mar 3, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

Vendor	Product	Versions
AWS	AWS-LC	affected `1.41.0 - < 1.69.0`

Weaknesses (CWE)

CWE-347

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

References

https://aws.amazon.com/security/security-bulletins/2026-005-AWS/

vendor-advisory

https://github.com/aws/aws-lc/releases/tag/v1.69.0

patch

https://github.com/aws/aws-lc/security/advisories/GHSA-jchq-39cv-q4wj

third-party-advisory

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CVE-2026-3338

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References