Widespread Exploitation of Cleo File Transfer Software (CVE-2024-55956)

On Monday, December 9, multiple security firms began privately circulating reports of in-the-wild exploitation targeting Cleo file transfer software. Late the evening of December 9, security firm Huntress published a blog on active exploitation of three different Cleo products docs: Cleo VLTrader...

VulnCheck KEV: CVE-2024-55956

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...

VulnCheck KEV: CVE-2024-50623

Cleo Harmony, VLTrader, and LexiCom, which are managed file transfer products, contain an unrestricted file upload and download vulnerability that can lead to remote code execution with elevated privileges...

CVE-2024-50623

In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution...

CVE-2024-50623

In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution...

CVE-2024-50623

In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution. Recent assessments: sfewer-r7 at July 11, 2025 9:37am UTC reported: CVE-2024-50623 allows a remote unauthenticated...

PT-2024-10294

Name of the Vulnerable Software and Affected Versions Cleo Harmony versions prior to 5.8.0.21 Cleo VLTrader versions prior to 5.8.0.21 Cleo LexiCom versions prior to 5.8.0.21 Description A critical vulnerability in Cleo's file transfer software is being actively exploited, allowing unauthenticate...

CVE-2024-50623

CVE-2024-50623 affects Cleo Harmony, Cleo VLTrader, and Cleo LexiCom prior to 5.8.0.21. It is an unrestricted file upload/download flaw that could lead to remote code execution. PoCs exist (e.g., GitHub exploits), and the recommended remediation is to upgrade to 5.8.0.21 or newer. Some connected ...

CVE-2024-50623

In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before 5.8.0.21, there is an unrestricted file upload and download that could lead to remote code execution...