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    CVE-2025-64766

    NixOS's Onlyoffice is a software suite that offers online and offline tools for document editing, collaboration, and management. In versions from 22.11 to before 25.05 and versions before Unstable 25.11, a hard-coded secret was used in the NixOS module for the OnlyOffice document server to protect its file cache. An attacker with knowledge of an existing revision ID could use this secret to obtain a document. In practice, an arbitrary revision ID should be hard to obtain. The primary impact is likely the access to known documents from users with expired access. This issue was resolved in NixOS unstable version 25.11 and version 25.05.

    Published:Nov 17, 2025
    Last Modified:Apr 15, 2026
    EPS:Nov 17, 2025
    EPSS Score:0.00038
    CVSS Score:5.3

    Affected Products

    Vendor
    Nixos
    Product
    Nixos
    Vendor
    Onlyoffice
    Product
    Onlyoffice

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-798 Use of Hard-coded Credentials

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    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