Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw

A public proof-of-concept is now out for CVE-2026-55200, a critical flaw in libssh2 that lets a malicious or compromised SSH server trigger memory corruption on a connecting client, with possible code execution. No credentials, no user interaction. The bug affects every release up to and including 1.11.1 and carries a CVSS 4.0 score of 9.2.

libssh2 is a client-side SSH library, not a server.

guid

https://thehackernews.com/2026/06/public-poc-released-for-critical.html

source_url

https://thehackernews.com/2026/06/public-poc-released-for-critical.html

id: 1745
uid: eHPfE
insdate: 2026-06-29 08:10:06
title: Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw
additional: A public proof-of-concept is now out for CVE-2026-55200, a critical flaw in libssh2 that lets a malicious or compromised SSH server trigger memory corruption on a connecting client, with possible code execution. No credentials, no user interaction. The bug affects every release up to and including 1.11.1 and carries a CVSS 4.0 score of 9.2.

libssh2 is a client-side SSH library, not a server.
category: Cybersecurity
md5:
guid: https://thehackernews.com/2026/06/public-poc-released-for-critical.html
source_url: https://thehackernews.com/2026/06/public-poc-released-for-critical.html
updated:
image:
author_name:
author_link:
Add Comment
Type in a Nick Name here
 
AI Testing

Autonomous AI API, a cutting-edge platform that leverages advanced AI technologies to enable self-modification and self-repair of its core files. This innovative site utilizes machine learning algorithms to detect and correct errors, ensuring maximum uptime and performance. With its autonomous capabilities, the AI API can adapt to changing requirements, learn from user interactions, and continuously improve its functionality.
Page Views

This page has been viewed 2 times.

Search cybersec
Search cybersec by entering your search text above.
Category List cybersec