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Netskope Endpoint DLP EUVDEUVD-2026-75879

| CVE-2026-16172 MEDIUM
Out-of-bounds Read (CWE-125)
2026-09-10 Netskope GHSA-4pvv-6pg2-px66
6.0
CVSS 4.0 · Vendor: Netskope
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain local standard user account
  2. Delivery
    Send crafted unbounded message to EPDLP kernel driver
  3. Exploit
    Trigger out-of-bounds heap read
  4. Execution
    Crash kernel driver handler (DLP offline)
  5. Impact
    Harvest leaked per-boot memory layout data

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an authenticated local user account with at least standard (non-admin) privilege on an endpoint where the Netskope Client with Endpoint DLP is installed and actively running. The attacker must be able to send IPC messages to the EPDLP kernel driver service from user space. Remote unauthenticated exploitation is not possible; the attack is strictly local. The memory layout disclosure is bounded to per-boot kernel address information, which is only useful if the attacker subsequently seeks to chain it with another local kernel vulnerability requiring ASLR bypass.

Impact

The CVSS 4.0 score of 6.0 is broadly reasonable for this flaw. The local attack vector (AV:L) and requirement for a standard (low-privilege) local user account (PR:L) are the primary risk limiters - remote exploitation is not possible, and anonymous network access is irrelevant. The SA:H metric captures the kernel driver crash accurately, as that component operates in a privileged ring separate from the EPDLP user-space service. EPSS data is not provided; given the niche product footprint and local-only prerequisite, real-world mass exploitation is unlikely. The memory layout leak is the more concerning secondary primitive: while the crash-induced DoS is recoverable (DLP temporarily offline), the ASLR bypass primitive could be chained with a separate write primitive in a multi-stage local privilege escalation attack. A security team - even at a mid-sized enterprise deployment in kielce where Netskope Client is centrally managed - should treat this as a scheduled patch rather than an emergency, prioritising environments where insider threat or shared-workstation scenarios elevate the risk of local attackers. No KEV listing and no public PoC have been identified, reducing urgency. The vendor advisory rating is consistent with the CVSS 4.0 assessment.

Exploit ScenarioDerived

A local user with a standard domain account on a Netskope-protected Windows endpoint sends a specially crafted inter-process message to the EPDLP kernel driver without administrative privileges. The driver reads beyond the message buffer boundary, triggering a crash that briefly disables DLP enforcement; simultaneously, the leaked heap data reveals kernel base addresses. No public exploit code exists, but the technique is a standard local kernel interaction primitive requiring only a user-mode account.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 10, 2026

Out-of-bounds heap read in Netskope Client's Endpoint DLP (EPDLP) service allows a local unprivileged user to crash the kernel driver handler by sending a specially crafted, unbounded message, temporarily suspending DLP policy enforcement. The flaw additionally leaks per-boot kernel memory layout information, providing an attacker a potential ASLR-bypass primitive. No public exploit code exists and the vulnerability has not been added to the CISA KEV catalog at time of analysis.

RemediationAI

Apply the patched Netskope Client version identified in vendor advisory NSKPSA-2026-008 at https://support.netskope.com/s/article/Netskope-Security-Advisory-Netskope-Client-Endpoint-DLP-Security-Notice---NSKPSA-2026-008. The exact fixed version is not independently confirmed in the available reference data, so consult the advisory directly for the target upgrade version. As a compensating control prior to patching, restrict local console and RDP access to Netskope-protected endpoints to only trusted administrative accounts, reducing the pool of principals who can send crafted messages to the EPDLP service. If the EPDLP feature is not actively required on specific endpoint classes, temporarily disabling it eliminates the attack surface entirely but will also suspend DLP enforcement on those hosts - weigh this trade-off carefully in regulated environments.

Affected VersionsENISA

Endpoint DLP 0 <141.0

Affected Packages

euvd endpoint_dlp fix: 141.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is the Netskope Endpoint DLP service (CPE: cpe:2.3:a:netskope:endpoint_dlp:*:*:*:*:*:*:*:*), a kernel-resident data loss prevention agent installed as part of the Netskope Client on endpoint systems. The service processes messages from user-space and passes them to a kernel driver handler. CWE-125 (Out-of-Bounds Read) arises when the driver fails to validate the bounds of an attacker-supplied message before reading from it, allowing reads beyond the intended buffer. The consequence is twofold: (1) the kernel driver handler dereferences out-of-bounds memory and crashes, terminating EPDLP enforcement, and (2) the heap contents read before the crash may include per-boot address layout data, which can undermine kernel ASLR. Because the kernel driver is a distinct privileged component from the user-space service, the CVSS 4.0 vector correctly models a subsequent-system availability impact (SA:H).

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Severity by source

Vendor (Netskope) PRIMARY 6.0 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:H
vuln.today AI 7.3 HIGH

Local-only (AV:L), low-privilege user required (PR:L); kernel driver crash crosses scope boundary (S:C/A:H); memory layout leak gives C:L.

3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:H

Primary rating from Vendor (Netskope).

CVSS VectorVendor: Netskope

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
High

Lifecycle Timeline

1
Patch available
Sep 11, 2026 - 01:02 EUVD

DescriptionCVE.org

Netskope was notified of an out-of-bounds heap read affecting the Endpoint DLP (EPDLP) service of the Netskope Client. A local standard user could potentially send a specially crafted message that is not properly validated with a bounds check, likely crashing the kernel driver handler. Successful exploitation could potentially crash the EPDLP service, temporarily interrupting DLP enforcement. A successful exploit could potentially also reveal per-boot memory layout information to unauthorized users.

Threat Intelligence Overview

EPSS Score
0.1%
Top 98% exploitable
Prevalence
Medium
Netskope Client widely deployed in enterprise DLP programs
Social Media
1
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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