HIGH SeverityCVSS 4.08.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVE-2026-5500

Last updated Apr 10, 2026 · Published Apr 10, 2026

Description

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.

Affected products

1 listed

wolfSSL:wolfSSL

Mappings

CWE

CWE-20

CAPEC

None listed.