Cleo — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for Cleo with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 2 Cleo vulnerabilities confirmed as exploited in the wild across 1 product; 2 of them (100%) are flagged as used in known ransomware campaigns. All entries affect a single product: Multiple Products. CISA added 2 entries in 2024, compared with 0 in 2023. Across the 2 entries with an NVD CVSS score (100% of the total), the average score is 9.8; 2 entries are rated critical by NVD. The most recent addition is CVE-2024-55956 (Cleo Multiple Products Unauthenticated File Upload Vulnerability), added on 2024-12-17.
Affected products
| Product | Entries | Share |
|---|---|---|
| Multiple Products | 2 | 100% |
Entries added per year
By date added to the KEV catalog
Exploited Cleo vulnerabilities (2)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2024-55956 | Multiple Products | Cleo Multiple Products Unauthenticated File Upload Vulnerability | 2024-12-17 | Known | CRITICAL9.8 |
| CVE-2024-50623 | Multiple Products | Cleo Multiple Products Unrestricted File Upload Vulnerability | 2024-12-13 | Known | CRITICAL9.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.