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                                        Netskope Security Advisory

                                        NSKPSA-2025-002

                                        Netskope Local Escalation of Privileges

                                        Security Advisory ID: NSKPSA-2025-002
                                        Severity Rating: Medium
                                        First Communicated: August 13, 2025
                                        Overall CVSS Score: 6.0
                                        Version: 1.0
                                        CVE-ID:‬‭ CVE-2025-0309

                                         

                                        Description
                                        An insufficient validation on the server connection endpoint in Netskope Client allows local users to elevate privileges on the system. The insufficient validation allows Netskope Client to connect to any other server with Public Signed CA TLS certificates and send specially crafted responses to elevate privileges.

                                         

                                        Affected Product(s) and Version(s)
                                        Product name: Netskope Client
                                        Affected Versions: R128 and prior

                                         

                                        CVE-ID(s)
                                        CVE-2025-0309

                                         

                                        Remediation
                                        Netskope has patched the issue and released a new version R129. Customers are recommended to upgrade Netskope Client to R129 or higher
                                        Netskope download Instructions – Download Netskope Client and Scripts – Netskope Support

                                         

                                        Workaround
                                        Customers can prevent Netskope Client connections to any random servers apart from goskope.com domain.

                                         

                                        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://support.netskope.com/s/article/Secure-Tenant-Configuration

                                         

                                        Special Notes and Acknowledgement
                                        Netskope credits Richard Warren of AmberWolf 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.