CVE-2026-3336

HIGH

7.5

Description

Improper certificate validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass certificate chain verification when processing PKCS7 objects with multiple signers, except the final signer. Customers of AWS services do not need to take action. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/2/2026

Last Modified3/11/2026

Sourcenvd

Honeypot Sightings0

Affected Products

amazon:aws-lc-sysamazon:aws_libcrypto

Weaknesses (CWE)

CWE-295

References

https://aws.amazon.com/security/security-bulletins/2026-005-AWS/(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/aws/aws-lc/releases/tag/v1.69.0(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp(ff89ba41-3aa1-4d27-914a-91399e9639e5)

IOC Correlations

No correlations recorded

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