CVE-2022-25640

HIGH

wolfssl < 5.2.0 - Improper Certificate Validation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-25640. PoCs published by dim0x69.

AI-analyzed exploit summary This repository contains a proof-of-concept exploit for CVE-2022-25640, a vulnerability in wolfSSL before 5.2 that allows a client to bypass mutual authentication in TLS 1.3 connections. The exploit uses Scapy to craft malicious TLS handshake packets.

Description

In wolfSSL before 5.2.0, a TLS 1.3 server cannot properly enforce a requirement for mutual authentication. A client can simply omit the certificate_verify message from the handshake, and never present a certificate.

Exploits (1)

nomisec WORKING POC 2 stars
by dim0x69 · poc
https://github.com/dim0x69/cve-2022-25640-exploit

This repository contains a proof-of-concept exploit for CVE-2022-25640, a vulnerability in wolfSSL before 5.2 that allows a client to bypass mutual authentication in TLS 1.3 connections. The exploit uses Scapy to craft malicious TLS handshake packets.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: wolfSSL < 5.2
No auth needed
Prerequisites: Network access to a vulnerable wolfSSL server · Scapy installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/wolfSSL/wolfssl/pull/4831

Scores

CVSS v3 7.5
EPSS 0.0133
EPSS Percentile 67.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-295
Status published
Products (1)
wolfssl/wolfssl < 5.2.0
Published Feb 24, 2022
Tracked Since Feb 18, 2026