VULNERABILITY INTELLIGENCE

CVE-2026-2646

CVSS score8.1 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-03-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A heap-buffer-overflow vulnerability exists in wolfSSL's wolfSSL_d2i_SSL_SESSION() function. When deserializing session data with SESSION_CERTS enabled, certificate and session id lengths are read from an untrusted input without bounds validation, allowing an attacker to overflow fixed-size buffers and corrupt heap memory. A maliciously crafted session would need to be loaded from an external source to trigger this vulnerability. Internal sessions were not vulnerable.

Weakness classification

  • facts@wolfssl.com: CWE-122
  • nvd@nist.gov: CWE-787

Primary references