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AIKIDO-2026-10434

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

Buffer overflow (heap based)CVE-2026-4395 Published Mar 30, 2026

13

Low Risk

This Affects:

C++wolfSSL.wolfssl
0.0.1 - 5.8.4
Fixed in 5.9.0
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TL;DR

When importing ECC keys in X9.63 form with KCAPI enabled, an unchecked raw public-key length can overflow an internal buffer during copy into wc_ecc_import_x963. KCAPI is off by default. The fix validates pubkey length before copying.

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.

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