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    CVE-2026-89040

    Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.

    Published:Sep 15, 2026
    Last Modified:Sep 22, 2026
    EPS:Sep 15, 2026
    EPSS Score:0.0093
    CVSS Score:9.8

    Affected Products

    Vendor
    Tencent
    Product
    Mass Service Engine In Cluster (msec)

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High