CVE-2026-5500

No fix known EPSS <1%CVSS 8.7

wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounds check. A man-in-the-middle can therefore truncate the mac field from 16 bytes to 1 byte, reducing the tag check from 2⁻¹²⁸ to 2⁻⁸.

Published 2026-04-10 · CVE record · OSV

Products: wolfssl

Distro releases