CVE-2026-2810: Netskope Endpoint DLP DoS Vulnerability

CVE-2026-2810 Overview

CVE-2026-2810 is an out-of-bounds read vulnerability affecting the Endpoint DLP Module for Netskope Client on Windows systems. This driver-level vulnerability can be exploited by an unprivileged local user to trigger a Blue-Screen-of-Death (BSOD), resulting in a denial-of-service condition for the affected system. The vulnerability requires the Endpoint DLP module to be enabled in the client configuration for successful exploitation.

Critical Impact
Local denial-of-service through BSOD can disrupt endpoint operations and potentially be leveraged for targeted attacks against systems with Netskope Endpoint DLP enabled.

Affected Products

Netskope Client for Windows (with Endpoint DLP Module enabled)
Netskope Endpoint DLP Driver

Discovery Timeline

2026-04-29 - CVE-2026-2810 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-2810

Vulnerability Analysis

This vulnerability is classified as CWE-125 (Out-of-Bounds Read), a memory corruption flaw where the Netskope Endpoint DLP driver reads data from memory locations outside the intended buffer boundaries. When triggered, the driver attempts to access memory that has not been properly allocated or validated, causing the Windows kernel to halt execution and generate a Blue Screen of Death.

The local attack vector requires an attacker to have user-level access to the Windows system. While the vulnerability does not allow arbitrary code execution or data exfiltration, the ability to crash the system on demand presents significant operational risks, particularly in enterprise environments where endpoint availability is critical.

Root Cause

The root cause is improper bounds checking within the Netskope Endpoint DLP driver when processing certain input data. The driver fails to adequately validate the size or boundaries of data being read, allowing specially crafted input to cause the driver to read beyond allocated memory regions. This lack of input validation at the kernel driver level results in an unrecoverable system fault.

Attack Vector

The attack requires local access to a Windows system with the Netskope Client installed and the Endpoint DLP module enabled. An unprivileged user can craft malicious input that triggers the out-of-bounds read condition in the driver. Since this operates at the kernel level, the resulting memory access violation causes Windows to perform a bug check (BSOD) to prevent potential system corruption.

The vulnerability mechanism involves the driver processing input without proper boundary validation, which can be described as follows:

When the Endpoint DLP driver receives data for inspection, it processes the input buffer without adequate size validation. An attacker can supply input that causes the driver to calculate an incorrect offset or length, resulting in a memory read operation that extends past the buffer boundary. The Windows kernel detects this invalid memory access and immediately halts the system to prevent further damage.

For detailed technical information, refer to the Netskope Security Advisory NSKPSA-2026-002.

Detection Methods for CVE-2026-2810

Indicators of Compromise

Unexpected BSOD events on systems with Netskope Endpoint DLP enabled
Crash dumps referencing Netskope DLP driver components
Multiple system restarts without apparent cause on protected endpoints
Event logs showing driver-related kernel errors before system crashes

Detection Strategies

Monitor Windows Event Logs for kernel-mode driver errors associated with Netskope components
Implement crash dump analysis to identify patterns consistent with out-of-bounds read exploitation
Deploy endpoint detection rules for abnormal process behavior targeting kernel drivers
Correlate BSOD incidents across multiple endpoints to identify potential targeted attacks

Monitoring Recommendations

Enable kernel crash dump collection and forward to SIEM for centralized analysis
Configure alerts for repeated BSOD events on systems with Endpoint DLP enabled
Monitor for unusual user activity preceding system crashes
Track Netskope Client driver version deployment across the environment

How to Mitigate CVE-2026-2810

Immediate Actions Required

Review the official Netskope Security Advisory NSKPSA-2026-002 for vendor-specific guidance
Identify all Windows systems with Netskope Client and Endpoint DLP module enabled
Prioritize patching for systems accessible to untrusted local users
Consider temporarily disabling the Endpoint DLP module on critical systems until patches are applied

Patch Information

Netskope has acknowledged this vulnerability and released guidance through their security advisory. Organizations should consult the Netskope Security Advisory NSKPSA-2026-002 for specific patch information, updated driver versions, and remediation instructions. Apply the latest Netskope Client updates that address this vulnerability as soon as they become available in your deployment environment.

Workarounds

Disable the Endpoint DLP module in Netskope Client configuration where not strictly required
Limit local access to sensitive systems to reduce attack surface
Implement additional access controls to restrict which users can interact with the Netskope driver
Monitor affected systems closely until patches can be deployed

bash

# Configuration example
# Verify Netskope Client version and DLP module status
# Check Netskope Client configuration via administrative console
# Ensure automatic updates are enabled for Netskope Client
# Consult Netskope support documentation for module-specific configuration