CVE-2025-5941 is an out-of-bounds read vulnerability (CWE-125) identified in the Netskope Client, a security agent deployed on endpoints to enforce cloud security policies. The vulnerability arises from improper handling of DNS packets, where a crafted DNS packet can trigger a memory leak by causing the client to read beyond the allocated buffer boundaries. This memory leak involves user-controllable data, specifically domain names stored locally on the machine, potentially exposing sensitive information. Exploitation requires administrative privileges on the affected machine, depending on the configuration, and does not require user interaction. The vulnerability has a low CVSS 4.0 score of 2.0, reflecting its limited impact and high attack complexity. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability primarily affects version 0 of the Netskope Client, suggesting it may be a newly discovered issue or related to an early release. The flaw could allow an attacker with local admin rights to glean sensitive domain information from memory, which might aid in further reconnaissance or lateral movement within a network.

For European organizations, the impact of CVE-2025-5941 is relatively low due to the requirement for administrative privileges and the limited scope of the memory leak. However, organizations using Netskope Client for cloud security enforcement could face confidentiality risks if sensitive domain names or internal network information are leaked. This could facilitate targeted attacks or data exfiltration in environments where DNS data is sensitive. Since the vulnerability does not allow code execution or privilege escalation directly, the immediate operational impact is minimal. Nonetheless, in highly regulated sectors such as finance, healthcare, or critical infrastructure within Europe, even low-severity leaks of network information can have compliance and security implications. The vulnerability could be leveraged as part of a multi-stage attack chain, especially in environments where endpoint security agents like Netskope are widely deployed.

Given the absence of an official patch, European organizations should implement several targeted mitigations: 1) Restrict administrative privileges on endpoints running the Netskope Client to minimize the risk of exploitation. 2) Monitor and audit DNS traffic and logs for unusual or malformed DNS packets that could indicate attempts to exploit this vulnerability. 3) Employ endpoint detection and response (EDR) solutions to detect anomalous memory access patterns or suspicious behavior related to the Netskope Client process. 4) Coordinate with Netskope support to obtain any available workarounds or beta patches and plan for prompt deployment once official fixes are released. 5) Harden endpoint configurations by disabling unnecessary services or features within the Netskope Client that process DNS data if feasible. 6) Educate IT and security teams about the vulnerability to ensure rapid incident response if exploitation attempts are detected.