# CVE-2020-16995: Network Watcher Agent Virtual Machine Extension for Linux Elevation of Privilege Vulnerability

> An attacker with local user access can exploit this vulnerability to execute code with elevated privileges on Linux virtual machines using the Network Watcher Agent.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x396-jhp4-w26w

## What is CVE-2020-16995?

CVE-2020-16995 is a high-severity vulnerability in Microsoft Network Watcher Agent virtual machine extension for Linux, published on 16 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

<p>An elevation of privilege vulnerability exists in Network Watcher Agent virtual machine extension for Linux. An attacker who successfully exploited this vulnerability could execute code with elevated privileges.</p>
<p>To exploit this vulnerability, an attacker would have to be present as a user on the affected virtual machine.</p>
<p>The security update addresses this vulnerability by correcting how Network Watcher Agent virtual machine extension for Linux executes with elevated privileges.</p>

## Which versions are affected by CVE-2020-16995?

It affects 1 product.


Products: Microsoft Network Watcher Agent.

## How do I fix CVE-2020-16995?

No fix has been published for CVE-2020-16995 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-16995 being exploited?

There is no known exploitation of CVE-2020-16995 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-16995 and fix it if it is affected.

What it is: CVE-2020-16995 is a high-severity vulnerability in Microsoft Network Watcher Agent virtual machine extension for Linux, published on 16 Oct 2020. 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-2020-16995 in the wild and no public exploit code.

Affected product: Microsoft Network Watcher Agent virtual machine extension for Linux. 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-2020-16995/ (Markdown: https://insights.sbomify.com/CVE-2020-16995/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-16995
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-16995
- OSV: https://osv.dev/vulnerability/CVE-2020-16995

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-16995/
Summaries are generated and may contain mistakes; the official description above is the record.
