CVE-2025-15584 in Endpoint DLP Module for Client
Summary
by MITRE • 03/17/2026
Netskope was notified about a potential gap in its Endpoint DLP Module for Netskope Client on Windows systems. The successful exploitation of the gap can potentially allow an unprivileged user to trigger an integer overflow within the filter communication port, leading to a Blue-Screen-of-Death (BSOD). Successful exploitation would require the Endpoint DLP module to be enabled in the client configuration. A successful exploit can potentially result in a denial-of-service for the local machine.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 03/21/2026
The vulnerability identified as CVE-2025-15584 represents a critical integer overflow condition within the Endpoint DLP Module of Netskope Client for Windows systems. This flaw exists in the filter communication port implementation where an unprivileged user can manipulate input parameters to cause arithmetic overflow during integer calculations. The vulnerability specifically affects systems where the Endpoint DLP module has been enabled in the client configuration, making it a targeted issue for organizations utilizing Netskope's data loss prevention capabilities. The integer overflow occurs during routine communication processing within the filter port mechanism, creating a condition where normal operations can be exploited to trigger system instability.
The technical exploitation of this vulnerability leverages the inherent weakness in input validation and arithmetic handling within the Windows client component. When an unprivileged user sends crafted data through the filter communication port, the system processes this input without proper bounds checking, allowing the integer overflow to occur. This overflow condition corrupts memory structures and causes the Windows kernel to terminate the system's operation, resulting in a Blue-Screen-of-Death error. The vulnerability demonstrates poor defensive programming practices where integer arithmetic operations lack proper overflow detection mechanisms, a weakness commonly associated with CWE-190 - Integer Overflow or Wraparound. The exploitation requires minimal privileges and can be executed through standard user accounts without requiring administrative rights, making it particularly concerning for enterprise environments where user access controls may be less restrictive.
From an operational impact perspective, the vulnerability creates a significant denial-of-service risk for affected Windows systems. The Blue-Screen-of-Death condition renders the local machine unusable until manual system restart occurs, disrupting productivity and potentially affecting business operations. This type of vulnerability can be particularly problematic in enterprise environments where multiple users may be running the Netskope client with DLP enabled, as a single compromised user account could potentially affect multiple systems. The vulnerability also represents a potential vector for more sophisticated attacks if attackers can use the system instability to execute additional malicious activities, though the primary risk remains focused on service disruption. The impact is amplified when considering that this affects endpoint security clients which are typically deployed across numerous devices within enterprise networks, potentially creating cascading failure scenarios.
Organizations should prioritize immediate mitigation through official patches provided by Netskope, as this vulnerability represents a clear security gap that can be exploited without elevated privileges. System administrators should verify that the Endpoint DLP module is not enabled on systems where it is not required, serving as a temporary workaround while permanent patches are deployed. The vulnerability aligns with ATT&CK technique T1499.004 - Endpoint Denial of Service, specifically targeting the availability of endpoint systems through malicious manipulation of legitimate security software components. Network monitoring should be enhanced to detect unusual communication patterns through the filter ports that might indicate exploitation attempts, as this type of vulnerability often shows detectable behavioral anomalies before full exploitation occurs. Additionally, organizations should review their privilege management policies to ensure that unnecessary user accounts do not have access to systems where Netskope client is installed with DLP enabled, reducing the attack surface for this specific vulnerability.