Privilege Escalation Vulnerability in Netskope Client

CVE-2025-0309

What is CVE-2025-0309?

CVE-2025-0309 is a privilege escalation vulnerability present in the Netskope Client, a security application designed to help organizations manage their cloud security posture and protect data across cloud services. This vulnerability arises from insufficient validation of the server connection endpoint, enabling local users to connect the Netskope Client to any server that utilizes Public Signed CA TLS certificates. Attackers can exploit this flaw by sending specially crafted responses, consequently elevating their privileges on the system. The implications of this weakness are particularly concerning for organizations that rely on the Netskope Client for cloud security, as it could allow unauthorized users to gain increased access to critical systems and sensitive data, facilitating potentially severe security breaches.

Potential impact of CVE-2025-0309

1. Unauthorized Access: The vulnerability allows local users to manipulate connections to the Netskope Client, elevating their privileges and potentially gaining unauthorized access to sensitive information or administrative capabilities within the organization.

2. Data Breaches: By exploiting this privilege escalation flaw, attackers can compromise the integrity and confidentiality of data managed by the Netskope Client, leading to significant data breaches that can affect both corporate and personal information.

3. Increased Attack Surface: With the ability to elevate privileges, malicious actors may install additional unauthorized software or execute commands, thus expanding the attack surface and increasing the likelihood of sustained breaches or further exploitation through lateral movement within the network.

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