CVE-2026-5448CWE-122

1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBefore

Low · published April 9, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
2.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
2.3 · LOW
Vector
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
EPSS
0.00129 · 2.3th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-04-09T23:18Z
EPSS history
Timeline
  • 09 APR 23:18Z
    1-2 Byte Buffer Overflow in wolfSSL_X509_notAfter/notBefore
    cvelistv5