Cleo Multiple Products Unrestricted File Upload Vulnerability
n/a — n/a
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.
9.8
98.6%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- Oct 28, 2024
- Modified
- Oct 8, 2026
- Added to KEV
- Dec 13, 2024
- Federal patch due
- Jan 3, 2025
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
4 foundWeaponization
Public repositories whose name or description references CVE-2024-50623, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- watchtowrlabs/CVE-2024-50623★ 25
Cleo Unrestricted file upload and download PoC (CVE-2024-50623)
updated Dec 12, 2025
- verylazytech/CVE-2024-50623★ 7
CVE-2024-50623 POC - Cleo Unrestricted file upload and download
updated Feb 25, 2026
- iSee857/Cleo-CVE-2024-50623-PoC★ 5
Cleo 远程代码执行漏洞批量检测脚本（CVE-2024-50623）
updated Sep 29, 2025
- congdong007/CVE-2024-50623-poc★ 0
updated Apr 1, 2025
References
Frequently asked questions
What is 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.
How severe is CVE-2024-50623?
CVE-2024-50623 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2024-50623 actively exploited in the wild?
Yes. CVE-2024-50623 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Dec 13, 2024, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.
What is the EPSS score for CVE-2024-50623?
98.6% - meaning FIRST.org's EPSS model estimates a 98.6% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2024-50623?
Yes - a public Nuclei template referencing CVE-2024-50623 exist in public repositories we checked. We also found 4 public GitHub repositories referencing this CVE.
What type of vulnerability is CVE-2024-50623?
CVE-2024-50623 is classified under CWE-434 (CWE-434 Unrestricted Upload of File with Dangerous Type).
Cross-checked against
Impactr finds and proves whether CVE-2024-50623 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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