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                                              Netskope Security Advisory

                                              NSKPSA-2025-003

                                              Netskope Client is impacted by Heap Overflow vulnerability

                                              Security Advisory ID: NSKPSA-2025-003
                                              Severity Rating: Medium
                                              First Communicated: August 13, 2025
                                              Overall CVSS Score: 5.7
                                              Version: 1.0
                                              CVE-ID:‬‭ CVE-2025-5942

                                               

                                              Description
                                              Netskope is notified about a potential gap in its agent (NS Client) on Windows systems in which an unprivileged user can potentially trigger a heap overflow in the epdlpdrv.sys driver, leading to a Blue-Screen-of-Death (BSOD). Success exploitation could also be performed by an unprivileged user whose NS Client is configured to use Netskope Endpoint DLP. A successful exploit could result in a denial-of-service for the local machine.

                                               

                                              Affected Product(s) and Version(s)
                                              Product Name: Netskope Client + Endpoint DLP
                                              Affected Platform: Windows
                                              Affected Versions: All versions below R129

                                               

                                              CVE-ID(s)
                                              CVE-2025-5942

                                               

                                              Remediation
                                              Netskope has released a security patch for the issue. Please see below

                                              • Patch versions: R129 and above
                                              • Patch backported versions: R126.0.9 and above

                                              Netskope download Instructions – Download Netskope Client and Scripts – Netskope Support

                                               

                                              Workaround
                                              There are no workarounds available at this time.

                                               

                                              General Security Best Practices
                                              Netskope recommends using security hardening options available in the product and configuring them to harden the security of a Netskope tenant-
                                              https://docs.netskope.com/en/secure-tenant-configuration-and-hardening/

                                               

                                              Special Notes and Acknowledgement
                                              Netskope credits Thomas Brice for reporting this flaw.

                                               

                                              Exploitation and Public Disclosures
                                              Netskope is not aware of any active exploitation of the security issue.

                                               

                                              Revision History

                                              VersionDateSectionNotes
                                              1.0August 13, 2025Initial Release

                                               

                                              Legal Disclaimer
                                              To the maximum extent permitted by applicable law, information provided in this notice is provided “as is” without warranty of any kind. Your use of the information in this notice or materials linked herein are at your own risk. This notice and all aspects of Netskope’s Product Security Incident Response Policy are subject to change without notice. Response is not guaranteed for any specific issue or class of issues. Your entitlements regarding warranties, support and maintenance, including vulnerabilities in any Netskope software or service, are governed solely by the applicable master agreement between Netskope and you. The statements in this notice do not modify, enlarge or otherwise amend any of your rights under the applicable master agreement, or create any additional warranties or commitments.

                                               

                                              About Netskope
                                              Netskope, a leader in modern security and networking, addresses the needs of both security and networking teams by providing optimized access and real-time, context-based security for people, devices, and data anywhere they go. Thousands of customers, including more than 30 of the Fortune 100, trust the Netskope One platform, its Zero Trust Engine, and its powerful NewEdge network to reduce risk and gain full visibility and control over cloud, AI, SaaS, web, and private applications—providing security and accelerating performance without trade-offs.