CVE-2026-55200

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

June 21, 2026

Last Seen

August 20, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Anonymous Researcher Publishes Zero-Day Exploits for Major Software Projects74.0

An anonymous researcher known as Bikini has released exploit code for over a dozen zero-day vulnerabilities affecting 15 popular open-source projects, including the Linux kernel and Libssh2. The exploits were disclosed without prior notification to the vendors, raising concerns about potential wides...

Multiple High-Risk Vulnerabilities Discovered in Gentoo Linux Packages74.0

On August 20, 2026, Gentoo Linux announced multiple high-severity vulnerabilities affecting various packages, including libssh2, acl, attr, quickjs-ng, and Emacs. The vulnerabilities allow for high remote code execution risks, impacting users running these packages. Specific CVEs include CVE-2025-15...

Critical Vulnerabilities in libssh2 Enable Remote Code Execution and DoS Attacks67.5

Two critical vulnerabilities have been discovered in libssh2, a widely used SSH library, affecting versions up to 1.11.1. The first vulnerability, CVE-2026-55200, allows remote code execution through crafted SSH packets, with a CVSS score of 9.2. The second vulnerability, CVE-2026-55199, enables den...