CVE-2025-5942

Heap Overflow in Netskope Endpoint DLP Driver

Published Aug 14, 2025 CVSS 4.0 · 5.7 Medium EPSS < 1% KEV · Not listed
Description
Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. If this gap is successfully exploited, an unprivileged user can trigger a heap overflow in the epdlpdrv.sys driver, leading to a Blue-Screen-of-Death (BSOD). Successful exploitation can also potentially be performed by an unprivileged user whose NS Client is configured to use Endpoint DLP. A successful exploit can result in a denial-of-service for the local machine.

Remediation

Vendor Solution

Update the Netskope Client to version 129.0.0 or newer, or to the hotfix version of 126.0.9.


Vendor Workaround

Some AV and EDR solutions may be able to detect the behaviors associated with exploiting this vulnerability.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2025-24660 Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. If this gap is successfully exploited, an unprivileged user can trigger a heap overflow in the epdlpdrv.sys driver, leading to a Blue-Screen-of-Death (BSOD). Successful exploitation can also potentially be performed by an unprivileged user whose NS Client is configured to use Endpoint DLP. A successful exploit can result in a denial-of-service for the local machine.
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
First Time appeared Netskope
Netskope netskope
Vendors & Products Netskope
Netskope netskope
Type Values Removed Values Added
Description Netskope was notified about a potential gap in its agent (NS Client) on Windows systems. If this gap is successfully exploited, an unprivileged user can trigger a heap overflow in the epdlpdrv.sys driver, leading to a Blue-Screen-of-Death (BSOD). Successful exploitation can also potentially be performed by an unprivileged user whose NS Client is configured to use Endpoint DLP. A successful exploit can result in a denial-of-service for the local machine.
Title Heap Overflow in Netskope Endpoint DLP Driver
Weaknesses CWE-122
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Netskope
Published
Updated
Aug 18, 2025, 4:45 PM
Reserved
Jun 9, 2025, 4:38 PM
Status
Deferred
Published
Aug 14, 2025, 5:15 AM
Modified
Jun 17, 2026, 9:49 AM