CVE-2026-5447

MEDIUM

Heap buffer overflow in CertFromX509() via AuthorityKeyIdentifier

Title source: cna

Description

Heap buffer overflow in CertFromX509 via AuthorityKeyIdentifier size confusion. A heap buffer overflow occurs when converting an X.509 certificate internally due to incorrect size handling of the AuthorityKeyIdentifier extension.

References (1)

https://github.com/wolfSSL/wolfssl/pull/10112

Scores

CVSS v4 6.3

EPSS 0.0004

EPSS Percentile 13.1%

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

Details

CWE

CWE-122

Status published

Products (1)

wolfSSL/wolfSSL < 5.9.1

Published Apr 09, 2026

Tracked Since Apr 10, 2026