# CVE-2015-6125: Use after free in n/a

> Remote attackers can execute arbitrary code on Windows DNS servers via crafted requests exploiting a use-after-free vulnerability.

- **Severity:** Critical 9.3 (`AV:N/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Dec 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-26g4-3p64-cvvp

## What is CVE-2015-6125?

CVE-2015-6125 is a critical use after free vulnerability in Microsoft Windows Server 2008, published on 9 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Use-after-free vulnerability in the DNS server in Microsoft Windows Server 2008 SP2 and R2 SP1 and Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted requests, aka "Windows DNS Use After Free Vulnerability."

## Which versions are affected by CVE-2015-6125?

It affects 2 products.


Products: Microsoft Windows Server 2008, Microsoft Windows Server 2012.

## How do I fix CVE-2015-6125?

No fix has been published for CVE-2015-6125 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-6125 being exploited?

There is no known exploitation of CVE-2015-6125 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows Server 2008

- [CVE-2020-1350](https://insights.sbomify.com/CVE-2020-1350/): Microsoft Windows DNS Server Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2020-1040](https://insights.sbomify.com/CVE-2020-1040/): Microsoft Hyper-V RemoteFX vGPU Remote Code Execution (critical 9.0, exploited in the wild)
- [CVE-2011-1966](https://insights.sbomify.com/CVE-2011-1966/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-0239](https://insights.sbomify.com/CVE-2010-0239/): Memory corruption in n/a (critical 10.0)
- [CVE-2010-0240](https://insights.sbomify.com/CVE-2010-0240/): Code injection in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-6125 and fix it if it is affected.

What it is: CVE-2015-6125 is a critical use after free vulnerability in Microsoft Windows Server 2008, published on 9 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-6125 in the wild and no public exploit code.

Affected product: Microsoft Windows Server 2008. 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-2015-6125/ (Markdown: https://insights.sbomify.com/CVE-2015-6125/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-6125
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-6125
- OSV: https://osv.dev/vulnerability/CVE-2015-6125

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-6125/
Summaries are generated and may contain mistakes; the official description above is the record.