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    CVE-2025-0309

    An insufficient validation on the server connection endpoint in Netskope Client allows local users to elevate privileges on the system. The insufficient validation allows Netskope Client to connect to any other server with Public Signed CA TLS certificates and send specially crafted responses to elevate privileges.

    Published:Aug 14, 2025
    Last Modified:Apr 15, 2026
    EPS:Aug 14, 2025
    EPSS Score:0.00018
    CVSS Score:6

    Affected Products

    Vendor
    Netskope
    Product
    Netskope

    Exploits

    https://github.com/AmberWolfCyber/UpSkope

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Related CVEs

    CVE-2025-15642 (CVSS 6.8) — Netskope is notified about a potential gap in its Netskoped Client for Windows systems where a malicious insid…
    CVE-2025-15641 (CVSS 6.8) — Netskope was notified about a potential gap in its Netskope Client for Windows systems where a malicious insid…
    CVE-2025-11156 (CVSS 5.9) — Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. If this gap is succe…
    CVE-2025-5942 (CVSS 5.7) — Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. If this gap is succe…
    CVE-2025-5941 (CVSS 2) — Netskope is notified about a potential gap in its agent (NS Client) in which a malicious actor could trigger a…
    CVE-2024-7402 (CVSS 7) — Netskope has identified a potential gap in its agent (Netskope Client) in which a malicious insider can potent…
    CVE-2024-7401 (CVSS 8.5) — Netskope was notified about a security gap in Netskope Client enrollment process where NSClient is using a sta…
    CVE-2023-4996 (CVSS 6.6) — Netskope was made aware of a security vulnerability in its NSClient product for version 100 & prior where a ma…
    CVE-2022-4149 (CVSS 7) — The Netskope client service (prior to R96) on Windows runs as NT AUTHORITY\SYSTEM which writes log files to a …
    CVE-2023-2270 (CVSS 7) — The Netskope client service running with NT\SYSTEM privileges accepts network connections from localhost to st…

    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