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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 03 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 02 Mar 2026 22:30:00 +0000

Type Values Removed Values Added
References

Mon, 02 Mar 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title PKCS7_verify Signature Validation Bypass in AWS-LC
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-03-03T14:39:48.768Z

Reserved: 2026-02-27T15:16:29.281Z

Link: CVE-2026-3338

cve-icon Vulnrichment

Updated: 2026-03-03T14:39:43.993Z

cve-icon NVD

Status : Received

Published: 2026-03-02T22:16:32.350

Modified: 2026-03-02T23:16:31.653

Link: CVE-2026-3338

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses