VulnerabilityPublished 17 Mar 2026

CVE-2026-2809: Endpoint DLP Module for Netskope Client · Integer Overflow or Wraparound

Affects Endpoint DLP Module for Netskope ClientSource CVE Database V5

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Not known to be exploited · CVSS 6.7 Medium : upgrade to 132.0.20 when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 4.0 base score

6.7Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 132.0.20

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Attack Vector: Local
Attack Complexity: Low
Attack Requirements: None
Privileges Required: High
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: High
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: High: There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the Vulnerable System; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the Vulnerable System (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Endpoint DLP Module for Netskope Client to 132.0.20.

Affected software

Product	Affected	Fixed in
NetskopeEndpoint DLP Module for Netskope Client	Affected =0	Fixed in 132.0.20

AI-suggested

To mitigate CVE-2026-2809, organizations should first verify whether the Endpoint DLP module is enabled on their Netskope Client installations and assess the necessity of this module in their environment. If feasible, temporarily disabling the Endpoint DLP module can prevent exploitation until a patch is released. Restrict and monitor privileged user access rigorously to reduce the risk of local exploitation. Implement strict endpoint security controls, including application whitelisting and behavior monitoring, to detect anomalous DLL injection activities. Maintain up-to-date backups and system recovery plans to minimize downtime in case of a BSOD event. Additionally, conduct regular vulnerability assessments and penetration testing focused on privileged modules to identify similar integer overflow risks. Educate system administrators about the risks of local privilege misuse and enforce least privilege principles to limit exposure.

Description

CVE-2026-2809 is an integer overflow vulnerability in the Netskope Endpoint DLP Module for Windows clients. It can be triggered by a privileged user when the Endpoint DLP module is enabled, causing a Blue Screen of Death (BSOD) and resulting in a denial-of-service condition on the local machine. Exploitation does not require user interaction but does require high privileges. The vulnerability stems from improper handling of integer values in the DLL Injector component, leading to overflow or wraparound. No known exploits are currently reported in the wild. The CVSS 4.0 score is 6.7 (medium severity), reflecting the local attack vector and requirement for privileged access. Organizations using Netskope Endpoint DLP on Windows should prioritize patching or mitigating this issue to prevent potential service disruption. This vulnerability primarily impacts environments with the Endpoint DLP module enabled and Windows-based endpoints.

Impact

The primary impact of CVE-2026-2809 is a denial-of-service condition on Windows endpoints running the Netskope Endpoint DLP module. This can disrupt endpoint operations, potentially affecting user productivity and availability of critical systems. In enterprise environments, repeated or targeted exploitation could lead to operational instability, especially if the DLP module is widely deployed and integral to data protection policies. While the vulnerability does not allow privilege escalation or data compromise directly, the resulting system crashes could be leveraged by malicious insiders or attackers with elevated access to cause disruption or cover tracks. Organizations relying on Netskope Endpoint DLP for compliance and data protection may face increased risk of downtime and reduced endpoint security posture until the vulnerability is addressed. The requirement for privileged access limits remote exploitation, but insider threats or compromised administrator accounts pose a significant risk vector. The lack of known exploits reduces immediate threat but does not eliminate future risk once exploit code becomes available.

CWE-190Integer Overflow or Wraparound (opens in a new tab)
Base weaknessLikelihood of exploit: Medium
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V5.4.3 (opens in a new tab)
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
Attack patterns
Forced Integer Overflow (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

support.netskope.com/s/article/NSKPSA-2026-001-Endpoint-DLP-Driver-DLL-Injector-Integer-Overflow (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Mar 2026, 01:01 UTC

WeaknessesCWE-190

Technical details

References

Community reviews

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