Is CVE-2026-3338 actively exploited?

No active exploitation of CVE-2026-3338 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3338 be exploited remotely?

Yes. CVE-2026-3338 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3338?

CVE-2026-3338 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-3338

CWE-347Published: March 2, 2026· Updated: Mar 3, 2026

7.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-3338 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.