Intel

AIKIDO-2026-10439

wolfSSL.wolfssl is vulnerable to Buffer overflow (heap based)

Buffer overflow (heap based)CVE-2026-2646 Published Mar 30, 2026

50

Medium Risk

This Affects:

C++wolfSSL.wolfssl
0.0.1 - 5.8.4
Fixed in 5.9.0
Are you affected? Scan for Free

TL;DR

wolfSSL_d2i_SSL_SESSION() deserializes session blobs with SESSION_CERTS enabled using certificate and session identifier lengths from untrusted input without sufficient bounds checks, allowing heap corruption when a malicious session is loaded from an external source. Internal sessions are not affected. The fix validates lengths before copying into fixed-size buffers.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

wolfSSL.wolfssl is vulnerable to Buffer overflow (heap based) in versions 0.0.1 - 5.8.4.

How to fix this

Upgrade the wolfSSL.wolfssl library to the patch version.