CVE-2025-0309

Netskope Client Local Elevation of Privileges

Published Aug 14, 2025 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update the Netskope Client to version 129.0.0 or newer


Vendor Workaround

There are multiple configurations which can mitigate and reduce potential exposure: * Block connection/access to any new domain or URLs to NS Client apart from goskope.com * Use EDR tools to monitor connections from NS Client to any random domains and block it * Monitor for addition of any self signed certificates in operating system certificate store * Monitor the status of NS Client

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-24661 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-295
Type Values Removed Values Added
First Time appeared Netskope
Netskope netskope
Vendors & Products Netskope
Netskope netskope
Type Values Removed Values Added
Description 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.
Title Netskope Client Local Elevation of Privileges
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Netskope
Published
Updated
Aug 15, 2025, 12:58 PM
Reserved
Jan 7, 2025, 2:23 PM
Status
Deferred
Published
Aug 14, 2025, 5:15 AM
Modified
Jun 17, 2026, 8:26 AM