CVE-2026-5448

LOW

1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBefore

Title source: cna

Description

X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS or certificate verify operations in wolfSSL.

References (1)

https://github.com/wolfSSL/wolfssl/pull/10071

Scores

CVSS v4 2.3

EPSS 0.0002

EPSS Percentile 4.4%

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

Details

CWE

CWE-122

Status published

Products (1)

wolfSSL/wolfSSL < 5.9.1

Published Apr 10, 2026

Tracked Since Apr 10, 2026