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CVE-2024-50623

KEVRansomware UseCleo Multiple Products Unrestricted File Upload Vulnerability
Description

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.

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.

CVSS 3.1 vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
PublishedOct 28, 2024
Last modifiedOct 8, 2026
Added to KEVDec 13, 2024
Remediation dueJan 3, 2025
References
0 recent articles mention this CVE
    99
    Risk assessment · Critical

    Actively exploited and used by ransomware crews. Patch immediately.

    Exploitation
    Confirmed in the wild (CISA KEV)
    Federal remediation deadline
    Overdue by 661 days
    Ransomware
    Used in known ransomware campaigns
    CVSS
    9.8 CRITICAL
    EPSS (30-day exploit probability)
    98.6% · top 1% of all CVEs
    Weakness
    CWE-434
    Attack vector
    Network, remotely reachable
    Preconditions
    No privileges and no user interaction
    Recommended actions
    1. 1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
    2. 2.Treat as emergency change: patch or isolate internet-facing instances first.
    3. 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
    4. 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
    5. 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.

    Assessment is derived automatically from the live signals above; verify against your own asset inventory.