What is CVE-2026-6329?

CVE-2026-6329 is a medium-severity vulnerability in Wolfssl, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.5/10. Published 2026-06-25.

How severe is CVE-2026-6329?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Wolfssl

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 parse…

EPSS: 0.002 (5.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Wolfssl — versions 3.10.0

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

facts@wolfssl.com (Patch, patch, Issue Tracking)
facts@wolfssl.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-6329?: CVE-2026-6329 is a medium-severity vulnerability in Wolfssl, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.5/10. Published 2026-06-25.
How severe is CVE-2026-6329?: Medium severity. CVSS v3 base score is 6.5 out of 10.