Improper Verification of Cryptographic Signature in wolfSSL - CVE-2026-6330
Published: July 1, 2026
Vulnerability identifier: #VU136637
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-6330
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wolfSSL
Affected software:
wolfSSL
wolfSSL
Detailed vulnerability description
The vulnerability allows a remote attacker to weaken ciphertext integrity protections.
The vulnerability exists due to improper authentication in the ML-KEM ARM64 NEON ciphertext comparison path when comparing ciphertext input. A remote attacker can supply crafted ciphertext to weaken ciphertext integrity protections.
The issue only affects the ARM64 NEON code path.
How to mitigate CVE-2026-6330
Install security update from vendor's website.