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CVE-2024-55956 affects Cleo Harmony, VLTrader, and LexiCom versions before 5.8.0.24. An unauthenticated attacker can write arbitrary files and abuse the default Autorun behavior and built-in Import functionality to execute attacker-controlled Bash or PowerShell commands on the host system. Autorun automatically interprets uploaded files, enabling remote command execution. Exploitation has been reported since at least December 3, 2024.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (cleo_rce_cve_2024_55956.rb) that exploits an unauthenticated remote code execution vulnerability (CVE-2024-55956) in Cleo LexiCom, VLTrader, and Harmony (versions 5.8.0.23 and below). The exploit leverages an unauthenticated file write via the '/Synchronization' HTTP endpoint to drop malicious configuration and payload files into the application's working directories. The exploit then triggers the application's autorun mechanism to execute arbitrary code as a privileged user. The module supports multiple payload types, including Java Meterpreter and OS command shells, and is weaponized for use within the Metasploit framework. The code includes logic for target fingerprinting, payload delivery, and cleanup. The main attack vector is network-based, requiring only HTTP access to the vulnerable service. The repository is well-structured, with all exploit logic contained in a single Ruby file following Metasploit conventions.
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26 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical unauthenticated command-execution vulnerability affecting Cleo Harmony, VLTrader, and LexiCom versions before 5.8.0.24. CISA ADP assigned a CVSS score of 9.8, and CISA added it to KEV on December 17, 2024. Cl0p claimed responsibility for a mass exploitation campaign; Termite was initially suspected, but attribution remains unconfirmed. The text says no public exploits were available at publication, while its references list an Ostorlab PoC exploit, creating an internal inconsistency about public exploit availability.
A critical unauthenticated command-execution vulnerability affecting Cleo Harmony, VLTrader, and LexiCom versions before 5.8.0.24. The content reports a CISA ADP CVSS score of 9.8, exploitation since December 3, 2024, and addition to CISA KEV on December 17. Cl0p claimed responsibility for mass exploitation; Termite was initially suspected, but attribution remains unconfirmed. The article explicitly states that no public exploits were available at publication, although its references include an ambiguously associated 'Ostorlab’s PoC Exploit' link.
A separate unauthenticated arbitrary file-write vulnerability in Cleo managed file transfer software. Attackers can leverage the Autorun directory's default behavior to import and execute arbitrary Bash or PowerShell commands. The article places this flaw in the context of ongoing Cleo exploitation and consistent post-exploitation activity, although it does not definitively attribute each observed incident to this CVE. It states that version 5.8.0.24 addresses the vulnerability.
A vulnerability in Cleo Harmony, VLTrader, and LexiCom file transfer products exploited for mass data exfiltration by ransomware groups.
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Cross-references every affected SKU, including bundled OEM variants.
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