Vulnerability DatabaseCVE-2026-3338
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CVE-2026-3338
March 02, 2026
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 Packages
https://github.com/aws/aws-lc.git (GITHUB):
Affected version(s) >=v0.1-beta <v1.69.0
Fix Suggestion:
Update to version v1.69.0
Related Resources (9)
https://github.com/aws/aws-lc-rs/security/advisories/GHSA-hfpc-8r3f-gw53
https://github.com/aws/aws-lc/security/advisories/GHSA-jchq-39cv-q4wj
https://aws.amazon.com/security/security-bulletins/2026-005-AWS/
https://github.com/aws/aws-lc/releases/tag/v1.69.0
https://github.com/aws/aws-lc-rs
https://crates.io/crates/aws-lc-sys
https://rustsec.org/advisories/RUSTSEC-2026-0047.html
https://nvd.nist.gov/vuln/detail/CVE-2026-3338
https://aws.amazon.com/security/security-bulletins/2026-005-AWS
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Verification of Cryptographic Signature
CWE-347
EPSS
Base Score:
0.01