CVE-2024-55956KEV · OVERDUECWE-77command-injection

Cleo Multiple Products Unauthenticated File Upload Vulnerability

Critical · published December 14, 2024

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.8th percentile for exploit probability.

656
days past CISA
deadline
CVSS v3.1
9.8
EPSS
94%
Percentile
99.8
In the wild
Confirmed
What it is

🚨 An unauthenticated user can execute ANY Bash or PowerShell commands on your system! This is a serious issue lurking in Cleo Harmony, VLTrader, and LexiCom versions before 5.8.0.24! 🔥 Think of the Autorun directory as a restaurant kitchen where chefs can cook whatever they want without a head chef approving the menu. If someone sneaks in and takes control, they could whip up a disaster! An attacker could gain full control of your system, install malware, delete critical files, or exfiltrate sensitive data—essentially turning your network into their playground. This vulnerability is absolutely devastating, and if left unpatched, it could lead to catastrophic breaches for your organization.

Put simply

Think of the Autorun directory as a restaurant kitchen where chefs can cook whatever they want without a head chef approving the menu. If someone sneaks in and takes control, they could whip up a disaster! This vulnerability allows unauthenticated users to import and execute arbitrary commands through the Autorun directory, bypassing critical security measures and directly interacting with the host system.

What to do

An attacker could gain full control of your system, install malware, delete critical files, or exfiltrate sensitive data—essentially turning your network into their playground. This vulnerability is absolutely devastating, and if left unpatched, it could lead to catastrophic breaches for your organization. Patch immediately to version 5.8.0.24 or later for Cleo Harmony, VLTrader, and LexiCom. Review your Autorun settings and ensure only trusted sources can execute commands. Implement strict access controls to mitigate the risk of exploitation. You've got this! With quick action, you can secure your systems and maintain your hero status in cybersecurity! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.93968 · 99.8th percentile
Weakness
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2024-12-14T02:15Z
KEV added
2024-12-17 · due 2025-01-07
Affected products (3)
ProductVersionsFixed in
cleo/harmony< 5.8.0.245.8.0.24
cleo/lexicom< 5.8.0.245.8.0.24
cleo/vltrader< 5.8.0.245.8.0.24
References (4)
EPSS history
Timeline
  • 17 DEC 00:00Z
    Added to CISA KEV — remediate by Jan 7
    kev
  • 13 DEC 00:00Z
    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…
    cvelistv5