Risk Letters

Exploited vulnerability

CVE-2024-55956

TLP:CLEAR

Cleo Multiple Products Unauthenticated File Upload Vulnerability

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.

Facts

  • Vendor: Cleo
  • Product: Multiple Products
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 94 %
  • On CISA's Known Exploited Vulnerabilities list since: 17 December 2024
  • First known exploitation: 17 December 2024
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 7 January 2025
  • Weakness: CWE-276
  • First seen by Risk Letters: 17 December 2024

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD