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CVE-2024-50623

Cleo Multiple Products Unrestricted File Upload

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 98.6%
  1. Published27 Oct 2024
  2. Added to CISA KEV13 Dec 2024
  3. Remediation due3 Jan 2025
Actively exploited (CISA KEV)

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.

Added to KEV: 13 Dec 2024Federal remediation due: 3 Jan 2025Used in ransomware

Description

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Cleo Harmony< 5.8.0.21
Cleo Lexicom< 5.8.0.21
Cleo Vltrader< 5.8.0.21

Remediation

Fixed in
Cleo Harmony≥ 5.8.0.21
Cleo Lexicom≥ 5.8.0.21
Cleo Vltrader≥ 5.8.0.21

References

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Frequently asked

Is CVE-2024-50623 being actively exploited?

Yes. CVE-2024-50623 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 13 Dec 2024. It has been used in ransomware campaigns.

How severe is CVE-2024-50623?

CVE-2024-50623 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 98.6% probability of exploitation.

Which products are affected by CVE-2024-50623?

Affected products include Cleo Harmony, Cleo Lexicom, Cleo Vltrader.

How do I fix CVE-2024-50623?

Upgrade affected software to a fixed version, for example Cleo Harmony 5.8.0.21, Cleo Lexicom 5.8.0.21, Cleo Vltrader 5.8.0.21 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-50623 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.