# CVE-2024-50623: Cleo - RCE

> Live exploitation tracking for CVE-2024-50623 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2024-50623

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** Cleo Harmony, Cleo VLTrader, Cleo LexiCom
- **Weaknesses:** CWE-434 (Unrestricted Upload of File with Dangerous Type)
- **Tags:** file_sharing

## 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.

## CrowdSec analysis

[CVE-2024-50623](https://euvd.enisa.europa.eu/vulnerability/CVE-2024-50623) is a critical vulnerability in Cleo Harmony, VLTrader, and LexiCom that allows for unrestricted file upload and download, potentially resulting in remote code execution.

CrowdSec has been tracking this vulnerability and its exploits since 18th of December 2024.

CrowdSec network data shows that most actors exploiting CVE-2024-50623 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature.
Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2024-50623 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2024-50623 is currently experiencing high visibility and active exploitation across the internet.

Observed attack attempts are primarily focused on the `/synchronization` endpoint.

## Timeline

- 2024-10-27: CVE Published. CVE-2024-50623 is published to NVD.
- 2024-12-13: CISA KEV. CVE-2024-50623 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2024-12-18: Rule Released. CrowdSec releases a rule to detect CVE-2024-50623 exploitation attempts against the CrowdSec Network.
- 2024-12-19: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2024-50623 for the first time.
- 2025-01-03: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).

## References

- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-50623.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2024-50623) follows observed exploitation activity for CVE-2024-50623. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.