# CVE-2025-11156: Improper Service Loading Vulnerability in Netskope Endpoint DLP Driver

> A local administrator can trigger a system crash in the Netskope Client driver, causing a denial of service on the affected Windows machine.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Nov 2025
- **Updated:** 28 Nov 2025
- **Also known as:** GHSA-3r5x-p9rp-jrmv

## What is CVE-2025-11156?

CVE-2025-11156 is a medium-severity vulnerability in Netskope Client, published on 28 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Netskope was notified about a potential gap in its agent (NS Client) on Windows systems.  If this gap is successfully exploited, a local, authenticated user with Administrator privileges can improperly load the driver as a generic kernel service. This triggers the flaw, causing a system crash (Blue-Screen-of-Death) and resulting in a Denial of Service (DoS) for the affected machine.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2025-11156?


## How do I fix CVE-2025-11156?

No fix has been published for CVE-2025-11156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-11156 being exploited?

There is no known exploitation of CVE-2025-11156 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11156 and fix it if it is affected.

What it is: CVE-2025-11156 is a medium-severity vulnerability in Netskope Client, published on 28 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-11156 in the wild and no public exploit code.

Affected product: Netskope Client. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-11156/ (Markdown: https://insights.sbomify.com/CVE-2025-11156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11156
- OSV: https://osv.dev/vulnerability/CVE-2025-11156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-11156/
Summaries are generated and may contain mistakes; the official description above is the record.