Netskope Client up to 137 on Windows IOCTL exposed ioctl with insufficient access control

CVSS Meta Temp Score
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CTI Interest Score
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3.3$0-$5k1.80

Summaryinfo

A vulnerability categorized as problematic has been discovered in Netskope Client up to 137 on Windows. This impacts an unknown function of the component IOCTL Handler. Executing a manipulation can lead to exposed ioctl with insufficient access control. This vulnerability is tracked as CVE-2025-15641. The attack is restricted to local execution. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Netskope Client up to 137 on Windows. This vulnerability affects an unknown functionality of the component IOCTL Handler. The manipulation with an unknown input leads to a exposed ioctl with insufficient access control vulnerability. The CWE definition for the vulnerability is CWE-782. The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL. As an impact it is known to affect integrity, and availability. CVE summarizes:

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

The weakness was disclosed by Juan Pablo Barriga as kpsa-2025-007. The advisory is shared for download at netskope.com. This vulnerability was named CVE-2025-15641 since 04/22/2026. The exploitation appears to be easy. The attack needs to be approached locally. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 138 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-210212). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.4
VulDB Temp Score: 3.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Exposed ioctl with insufficient access control
CWE: CWE-782
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Client 138

Timelineinfo

04/22/2026 CVE reserved
06/17/2026 +56 days Advisory disclosed
06/17/2026 +0 days VulDB entry created
06/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: kpsa-2025-007
Researcher: Juan Pablo Barriga
Status: Confirmed

CVE: CVE-2025-15641 (🔒)
GCVE (CVE): GCVE-0-2025-15641
GCVE (VulDB): GCVE-100-371512
EUVD: 🔒

Entryinfo

Created: 06/17/2026 05:44
Updated: 06/17/2026 09:27
Changes: 06/17/2026 05:44 (69), 06/17/2026 09:27 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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