# CVE-2024-43447: Windows SMBv3 Server Remote Code Execution Vulnerability

> An attacker can execute arbitrary code remotely on Windows Server via a double-free vulnerability in the SMBv3 server.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Nov 2024
- **Updated:** 8 Jul 2025
- **Also known as:** GHSA-qx56-hjgg-8xgm

## What is CVE-2024-43447?

CVE-2024-43447 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2022, published on 12 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Windows SMBv3 Server Remote Code Execution Vulnerability

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2024-43447?

It affects 1 product.


Products: Microsoft Windows Server 2022.

## How do I fix CVE-2024-43447?

No fix has been published for CVE-2024-43447 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-43447 being exploited?

There is no known exploitation of CVE-2024-43447 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows Server 2022

- [CVE-2022-34715](https://insights.sbomify.com/CVE-2022-34715/): Windows Network File System Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2025-50171](https://insights.sbomify.com/CVE-2025-50171/): Remote Desktop Spoofing Vulnerability (critical 9.1)
- [CVE-2026-70167](https://insights.sbomify.com/CVE-2026-70167/): Windows Domain Name Service Remote Code Execution Vulnerability (high 8.8)
- [CVE-2026-45648](https://insights.sbomify.com/CVE-2026-45648/): Windows Active Directory Domain Services Remote Code Execution Vulnerability (high 8.8)
- [CVE-2024-30064](https://insights.sbomify.com/CVE-2024-30064/): Windows Kernel Elevation of Privilege Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-43447 and fix it if it is affected.

What it is: CVE-2024-43447 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2022, published on 12 Nov 2024. 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-2024-43447 in the wild and no public exploit code.

Affected product: Microsoft Windows Server 2022. 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-2024-43447/ (Markdown: https://insights.sbomify.com/CVE-2024-43447/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-43447
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-43447
- OSV: https://osv.dev/vulnerability/CVE-2024-43447

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-43447/
Summaries are generated and may contain mistakes; the official description above is the record.