CVE-2026-6329

PKCS#12 MAC verification uses an attacker-controlled comparison length, weakening the integrity check on the MAC and allowing a mismatched MAC to be accepted. The PKCS#12 verify path compared the locally computed HMAC against the MAC parsed from the PKCS#12 structure using a length taken directly from the attacker-supplied input, without first verifying that it equals the length of the digest actually produced by the configured algorithm. A truncated or zero-length stored MAC could therefore be accepted, defeating the integrity protection of the MAC.

Affected products

Wolfssl, Wolfssl Jll

Wolfssl

< 5.9.2

CVSS 3.1

6.5 MEDIUM

EPSS

0.2% (11th percentile)

Weakness

CWE-347

NVD status

Analyzed

Published

2026-06-25

No exploit for CVE-2026-6329 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.