Intel

AIKIDO-2026-10433

wolfSSL.wolfssl is vulnerable to Out-of-bounds Read

Out-of-bounds ReadCVE-2026-4159 Published Mar 30, 2026

12

Low 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

wc_PKCS7_DecodeEnvelopedData reads one byte past the heap when CMS EnvelopedData has zero-length encrypted content. PKCS#7 is off by default. The fix bounds reads so zero-length content does not trigger an out-of-bounds read.

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 Out-of-bounds Read in versions 0.0.1 - 5.8.4.

How to fix this

Upgrade the wolfSSL.wolfssl library to the patch version.