# CVE-2016-3300: Privilege escalation in n/a

> Local attackers on domain-joined Windows machines can gain elevated privileges due to improper secure channel establishment in the Netlogon service.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 9 Aug 2016
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-fp3f-j2qm-7hhj

## What is CVE-2016-3300?

CVE-2016-3300 is a high-severity vulnerability in Microsoft Windows 8.1, published on 9 Aug 2016. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The Netlogon service in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT 8.1 improperly establishes secure communications channels, which allows local users to gain privileges by leveraging access to a domain-joined machine, aka "Netlogon Elevation of Privilege Vulnerability."

Weakness: CWE-264

## Which versions are affected by CVE-2016-3300?

It affects 3 products.


Products: Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2012.

## How do I fix CVE-2016-3300?

No fix has been published for CVE-2016-3300 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-3300 being exploited?

There is no known exploitation of CVE-2016-3300 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 8.1

- [CVE-2017-0022](https://insights.sbomify.com/CVE-2017-0022/): Microsoft XML Core Services Information Disclosure (medium 6.5, exploited in the wild)
- [CVE-2016-0044](https://insights.sbomify.com/CVE-2016-0044/): Denial of service in n/a (high 7.5)
- [CVE-2015-2361](https://insights.sbomify.com/CVE-2015-2361/): Memory corruption in n/a (high 7.2)
- [CVE-2015-0058](https://insights.sbomify.com/CVE-2015-0058/): Double free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows 8.1, Windows Server 2012 R2, and Windows RT 8.1 allo (high 7.2)
- [CVE-2017-0168](https://insights.sbomify.com/CVE-2017-0168/): Information disclosure in Windows Hyper-V (medium 5.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-3300 and fix it if it is affected.

What it is: CVE-2016-3300 is a high-severity vulnerability in Microsoft Windows 8.1, published on 9 Aug 2016. 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-2016-3300 in the wild and no public exploit code.

Affected product: Microsoft Windows 8.1. 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-2016-3300/ (Markdown: https://insights.sbomify.com/CVE-2016-3300/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-3300
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-3300
- OSV: https://osv.dev/vulnerability/CVE-2016-3300

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-3300/
Summaries are generated and may contain mistakes; the official description above is the record.