Vendor

    Cleo

    7 known vulnerabilities in products by Cleo, 2 of them actively exploited (CISA KEV).

    Key figures

    7

    Vulnerabilities

    2

    Actively exploited (KEV)

    2

    Used by ransomware

    3

    Critical

    Vulnerabilities

    Actively exploited vulnerabilities (CISA KEV) first, then by priority. Click a column header to re-sort the table.

    Vulnerabilities in Cleo
    CriticalCVE-2024-55956

    Cleo Multiple Products Unauthenticated File Upload Vulnerability

    In CISA KEVRansomware

    		9.8
    CriticalCVE-2024-50623

    Cleo Multiple Products Unrestricted File Upload Vulnerability

    In CISA KEVRansomware

    		9.8
    CriticalCVE-2021-33576

    Cleo Lexicom: security vulnerability

    		9.8
    HighCVE-2026-84115

    Cleo Harmony JWT Refresh Token connections privileges management

    		8.3
    MediumCVE-2026-84114

    Cleo Harmony SAML Authentication LocalUserUtil.getNativeUserByAssertions improper authentication

    		6.3
    HighCVE-2022-42966

    Exponential ReDoS in cleo leads to denial of service

    also in 1 other product

    		5.9
    MediumCVE-2021-33577

    Cleo Lexicom: security vulnerability

    		5.3

    Products

    Products by Cleo
    Cleo Harmony42
    Lexicom42