Intel

AIKIDO-2026-10435

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

Buffer overflow (heap based)CVE-2026-3548 Published Mar 30, 2026

72

High 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

The CRL parser mishandles CRL numbers stored as hexadecimal strings and large numeric values, allowing heap-based and stack-based buffer overflows when a build has CRL support enabled and processes CRL data from an untrusted source. Crafted CRLs can trigger out-of-bounds writes. The fix tightens parsing and bounds handling so CRL numbers cannot overflow the intended 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.