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.
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Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-12-13), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.
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.
October 28, 2024
November 5, 2025
Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-50623MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
Cleo 远程代码执行漏洞批量检测脚本（CVE-2024-50623）
Open source ↗CVE-2024-50623 POC - Cleo Unrestricted file upload and download
Open source ↗Cleo Unrestricted file upload and download PoC (CVE-2024-50623)
Open source ↗Cleo Harmony < 5.8.0.21 - Arbitary File Read
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-50623
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.