CVE WatchJul 15, 2026

CVE-2026-3338

Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PK

CVSS

7.5

High

EPSS

0.8%

p52

KEV

—

Exploit Today

0-100

Published: Mar 2, 2026 · Last modified: Jul 15, 2026 · CWE-347

EPSS · 30d

0.8%EPSS · 30 days0.8%

2026-06-302026-07-16

Technical 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.

Official references

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