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    CVE-2026-90863

    Missing authorization in the administrative interface of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to exceed their authorized scope, potentially enabling arbitrary command execution with elevated privileges and complete compromise of the underlying server.

    Published:Oct 29, 2026
    Last Modified:Oct 30, 2026
    EPS:Oct 29, 2026
    EPSS Score:0.00656
    CVSS Score:9.1

    Affected Products

    Vendor
    Progress
    Product
    Ws Ftp Server
    Vendor
    Progress Software
    Product
    Ws Ftp Server

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2026-90872 (CVSS 6.6) — Improper neutralization of directives in dynamically evaluated code in the Manager web console of Progress Sof…
    CVE-2026-90871 (CVSS 5.3) — Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior …
    CVE-2026-90870 (CVSS 5.3) — A missing release of backend receiver sessions in the Ad Hoc Transfer component of Progress Software WS_FTP Se…
    CVE-2026-90869 (CVSS 7.5) — A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in …
    CVE-2026-90868 (CVSS 9.9) — An OS command injection vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0…
    CVE-2026-90867 (CVSS 8.1) — Improper access control in the Web Admin console of Progress Software WS_FTP Server versions prior to 2024.0.7…
    CVE-2026-90866 (CVSS 9.1) — A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on W…
    CVE-2026-90865 (CVSS 9) — An OS command injection vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0…
    CVE-2026-90864 (CVSS 9.1) — A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on W…
    CVE-2026-90862 (CVSS 4.3) — Improper authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0…

    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