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CVE-2024-55956 is a critical vulnerability in Cleo Harmony, VLTrader, and LexiCom before version 5.8.0.24. The flaw allows an unauthenticated remote attacker to import and execute arbitrary Bash or PowerShell commands on the underlying host by abusing the products’ default Autorun directory behavior. Files placed in the Autorun directory are automatically interpreted, and an attacker can leverage the products’ import functionality to place crafted content that triggers command execution during processing. The issue affects default configurations and enables remote exploitation without prior authentication.
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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.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Cleo Harmony, VLTrader, and LexiCom file transfer products exploited for mass data exfiltration by ransomware groups.
A zero-day vulnerability in Cleo file transfer software exploited by Clop in 2024 for data theft and extortion.
Command injection vulnerability affecting CLEO MFT platforms, cited as being mass-exploited to drive a surge in Cl0p ransomware victimization.
A Cleo Managed File Transfer (MFT) vulnerability cited as a driver of CL0P ransomware activity impacting manufacturing and supply chains.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.