CVE Database›Document archive›CVE-2026-3338

CVE-2026-3338

aws-lc: AWS-LC: Signature bypass due to improper validation in PKCS7_verify()

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · March 3, 2026

Updated · November 5, 2026

Description

A flaw was found in AWS-LC. An unauthenticated user can bypass signature verification when processing PKCS7 objects with Authenticated Attributes due to improper signature validation in the PKCS7_verify() function. This vulnerability allows an attacker to potentially compromise the integrity of signed data.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

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

CWE-347 · Improper Verification of Cryptographic Signature