CVE-2024-55956

9.8

CVSS
Critical

PUBLISHED

In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary...

Exploited in the wild Used in malware Remote Low complexity No user interaction

Vendor: Cleo
Product: ["Harmony", "VLTrader", "LexiCom"]
Published: Dec 13, 2024
EPSS: —

Description

In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary Bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.

cisa malware ransomware nuclei_scanner metasploit nessus_scanner

CVSS scores

CVSS v3.1 9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation status

Exploited in the wild

Recorded 2024-12-17 00:00:00 UTC · Source

Used in malware

Recorded 2024-12-17 00:00:00 UTC · Source

SSVC decision points

Exploitation: active
Automatable: No
Technical impact: total

References

https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Advisory-CVE-Pending

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source	Added
CISA	Dec 17, 2024

Scanner integrations

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/cleo_rce_cve_2024_55956.rb	Apr 28, 2025
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-55956.yaml	Apr 25, 2025

Recent mentions

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75...

Google Threat Intelligence · Apr 29, 2025

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75 zero-day vulnerabilities exploited in the wild in 2024, a decrease from the number we identified in 2023 (98 vulnerabilities), but still an increase from 2022 (63 vulnerabilities). We divided the reviewed vulnerabilities into two main categories: end-user platforms and products (e.g., mobile devices, operating systems, and browsers) and enterprise-focused technologies, such as security software and appliances. Vendors continue to drive improvements that make some zero-day exploitation harder, demonstrated by both dwindling numbers across multiple categories and reduced observed attacks against previously popular targets. At the same time, commercial surveillance vendors (CSVs) appear to be increasing their operational security practices, potentially leading to decreased attribution and detection. We see zero-day exploitation targeting a greater number and wider variety of enterprise-specific technologies, although these technologies still remain a smaller proportion of overall exploitation when compared to end-user technologies. While the historic focus on the exploitation of popular end-user technologies and their users continues, the shift toward increased targeting of enterprise-focused products will require a wider and more diverse set of vendors to increase proactive security measures in order to reduce future zero-day exploitation attempts. For a deeper look at the trends discussed in this report, along with recommendations for defenders, register for our upcoming zero-day webinar. Scope This report describes what Google Threat Intelligence Group (GTIG) knows about zero-day exploitation in 2024. We discuss how targeted vendors and exploited products drive trends that reflect threat actor goals and shifting exploitation approaches, and then closely examine several examples of zero-day exploitation from 2024 that…

Potential proof of concepts

These PoCs are unverified and could contain malware. Use at your own risk.

cleo_rce_cve_2024_55956

metasploit · Created Unknown

Metasploit module for CVE-2024-55956

Vulnerability detail