CVE-2026-3336

HIGH EPSS 47.8%
Published Mar 2, 20264mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published Mar 2, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
47.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-295

Affected Products 2

VendorProductVersionRange
amazonaws-lc-sys*≥0.24.0  –  <0.38.0
amazonaws_libcrypto*≥1.41.0  –  <1.69.0

References 3

  • aws.amazon.com https://aws.amazon.com/security/security-bulletins/2026-005-AWS/
    Vendor Advisory
  • github.com https://github.com/aws/aws-lc/releases/tag/v1.69.0
    Release Notes
  • github.com https://github.com/aws/aws-lc/security/advisories/GHSA-cfwj-9wp5-wqvp
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.