December 17, 2024 · Applied Cybernetics Group
CVE-2024-55956 — Cleo Multiple Products
known ransomware use
Cleo Multiple Products Unauthenticated File Upload Vulnerability
- Added to KEV
2024-12-17- Federal due date
2025-01-07- Vendor
- Cleo
- Product
- Multiple Products
- EPSS
- 99.7th percentile (score 0.912, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2024-55956
CISA short description
Cleo Harmony, VLTrader, and LexiCom, which are managed file transfer products, contain an unrestricted file upload vulnerability that could allow an unauthenticated user to import and execute arbitrary bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.