CVE-2026-6329 | PKCS#12 MAC verification uses an attacker-controlled compari… | CVSS 6.0 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-6329
State: PUBLISHED
Assigner: wolfSSL
Reserved: 2026-04-15 03:08 UTC
Published: 2026-06-25 21:02 UTC
Last updated: 2026-06-25 21:02 UTC
Primary CWE: CWE-347
CWE-347 Improper Verification of Cryptographic Signature
Vendor / Product: wolfSSL / wolfSSL
Sources: cve.org · NVD

Severity & Metrics

6.0 MEDIUM CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Affected products (1)

Vendor	Product	Platform	Versions
wolfSSL	wolfSSL	—	3.10.0 ≤ 5.9.1

Weakness (CWE)

CWE	Source	Description
CWE-347	cna	CWE-347 Improper Verification of Cryptographic Signature

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.0	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

References (2)