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                                            Netskope Security Advisory

                                            NSKPSA-2025-001

                                            Netskope Client is impacted by Out-of-Bounds Read vulnerability

                                            Netskope is notified about a potential gap in its agent (NS Client) in which a malicious actor could trigger a memory leak by sending a crafted DNS packet to a machine. A successful exploitation may require administrative privileges on the machine, based on the exact configuration. A successful exploit can potentially result in user-controllable memory being leaked in a domain name stored on the local machine.

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                                            Security Advisory ID: NSKPSA-2025-001
                                            Severity Rating: Low
                                            First Communicated: August 13, 2025
                                            Overall CVSS Score: 2.0
                                            Version: 1.0
                                            CVE-ID:‬‭ CVE-2025-5941

                                             

                                            Description
                                            Netskope is notified about a potential gap in its agent (NS Client) in which a malicious actor could trigger a memory leak by sending a crafted DNS packet to a machine. A successful exploitation may require administrative privileges on the machine, based on the exact configuration. A successful exploit can potentially result in user-controllable memory being leaked in a domain name stored on the local machine.

                                             

                                            Affected Product(s) and Version(s)
                                            Product name: Netskope Client
                                            Affected Platform: Windows
                                            Affected Versions: All versions below R129

                                             

                                            CVE-ID(s)
                                            CVE-2025-5941

                                             

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

                                            • Patch versions: R129 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.