CVE-2024-55956

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 93.97%
EPSS Percentile: 99.85%
CISA KEV: YES — Known Exploited Vulnerability

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: cve@mitre.org
Published: 14-Dec-2024 04:15
Last Modified: 05-Aug-2026 12:16
EPSS Date: 2026-10-16
CWE: CWE-77

CVSS Vector


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

CISA KEV Details

Date Added: 2024-12-17
Remediation Due: 2025-01-07
Known Ransomware Campaign Use: Known
Required Action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes: https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update-CVE-2024-55956 ; https://nvd.nist.gov/vuln/detail/CVE-2024-55956

Affected Products / Versions

cleo / harmony
Version / affected range: * · before (exclusive) 5.8.0.24
cpe:2.3:a:cleo:harmony:*:*:*:*:*:*:*:*
cleo / lexicom
Version / affected range: * · before (exclusive) 5.8.0.24
cpe:2.3:a:cleo:lexicom:*:*:*:*:*:*:*:*
cleo / vltrader
Version / affected range: * · before (exclusive) 5.8.0.24
cpe:2.3:a:cleo:vltrader:*:*:*:*:*:*:*:*

References

Last enrichment sync: 18-Oct-2026 19:01
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (2)

CVE-2024-55956 Summary Cleo File-Transfer Products Actively Exploited; Version 5.8.0.21 Still Vulnerable
Summary - CVE-2024-55956 Huntress Analyzes Malichus Malware Linked to Cleo Software Exploitation

CVE (1)

Malware (1)

People (6)

MITRE ATT&CK (16)

Vendors (1)

Products (5)

Tools (4)

Industries (4)

Countries (5)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.