Improper Verification of Cryptographic Signature in wolfSSL - CVE-2026-6329

 

Improper Verification of Cryptographic Signature in wolfSSL - CVE-2026-6329

Published: July 1, 2026


Vulnerability identifier: #VU136636
CSH Severity: Medium
CVSS v4.0: 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:U/U:Green
CVE-ID: CVE-2026-6329
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: wolfSSL
Affected software:
wolfSSL

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass MAC verification.

The vulnerability exists due to improper authentication in PKCS#12 MAC verification when comparing MAC values using an attacker-controlled comparison length. A remote attacker can supply a crafted PKCS#12 object to bypass MAC verification.


How to mitigate CVE-2026-6329

Install security update from vendor's website.

Sources