---
title: "CVE-2024-50623: Cleo Multiple Products Unrestricted File Upload Vulnerability"
url: https://erroneo.us/security/cve/CVE-2024-50623/
description: "CVE-2024-50623 (Cleo Multiple Products): Exploited in the wild (CISA KEV). In Cleo Harmony before 5.8.0.21, VLTrader before 5.8.0.21, and LexiCom before…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-10-27
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-50623"
kev: true
cvss: 9.8
epss: 0.98607
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-50623: Cleo Multiple Products Unrestricted File Upload Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Cleo Multiple Products. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-12-13, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-01-03 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 98.6% , percentile 99.9: FIRST’s model estimates a 98.6% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

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.

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-12-13; federal due date 2025-01-03. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 98.61% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [Listed in CISA KEV notes (support.cleo.com)](https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update)
- [CVE.org record CVE-2024-50623](https://www.cve.org/CVERecord?id=CVE-2024-50623)
- [NVD entry CVE-2024-50623](https://nvd.nist.gov/vuln/detail/CVE-2024-50623)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-50623)
- [support.cleo.com](https://support.cleo.com/hc/en-us/articles/27140294267799-Cleo-Product-Security-Advisory)

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Source page: https://erroneo.us/security/cve/CVE-2024-50623/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt