CVE-2025-15641

Netskope Client Exposed IOCTL with Insufficient Access Controls

Published Jun 17, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
Netskope was notified about a potential gap in its Netskope Client for Windows systems where a malicious insider with administrative privileges can potentially tamper with the customer IOCTL by sending crafted IOCTL requests to the driver. A successful exploit can result in the bypassing of all anti-tampering protections for the NSClient.Affected Product(s) and Version(s)
* Product Name: Netskope Client
* Affected Platform: Windows
* Affected Version: All version below R138

Remediation

Vendor Solution

Use any of the below version of Netskope Client: * R138 and above * R135 (135.1.19.2670 and above ) * R132 (132.0.27.2671 and above )


Vendor Workaround

No workaround available

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Netskope
Netskope netskope
Vendors & Products Netskope
Netskope netskope
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Netskope was notified about a potential gap in its Netskope Client for Windows systems where a malicious insider with administrative privileges can potentially tamper with the customer IOCTL by sending crafted IOCTL requests to the driver. A successful exploit can result in the bypassing of all anti-tampering protections for the NSClient.Affected Product(s) and Version(s) * Product Name: Netskope Client * Affected Platform: Windows * Affected Version: All version below R138
Title Netskope Client Exposed IOCTL with Insufficient Access Controls
Weaknesses CWE-782
References
Metrics cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Netskope
Published
Updated
Jun 17, 2026, 2:57 PM
Reserved
Apr 22, 2026, 3:49 PM
Status
Awaiting Analysis
Published
Jun 17, 2026, 1:19 PM
Modified
Oct 7, 2026, 8:10 AM