# CVE-2023-24955: Microsoft SharePoint Server Code Injection

> Attackers can execute arbitrary code on Microsoft SharePoint Server, requiring immediate patching by administrators.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Yes, since 26 Mar 2024 (CISA KEV), used in ransomware
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 May 2023
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-8vmr-gjcv-vm3c

## What is CVE-2023-24955?

CVE-2023-24955 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 9 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-24955?

It affects 2 products.


Products: Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Server.

## How do I fix CVE-2023-24955?

No fix has been published for CVE-2023-24955 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 16 Apr 2024.

## Is CVE-2023-24955 being exploited?

Yes. Attackers have exploited CVE-2023-24955 in the wild since at least 26 Mar 2024, including in ransomware campaigns.

Public exploit code:

- Exploit for Microsoft SharePoint 2019 (github_poc): https://github.com/former-farmer/CVE-2023-24955-PoC
- Sharepoint Dynamic Proxy Generator Unauth RCE (metasploit)

## Other vulnerabilities in Microsoft Sharepoint Enterprise Server

- [CVE-2019-0604](https://insights.sbomify.com/CVE-2019-0604/): Microsoft SharePoint Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2025-49706](https://insights.sbomify.com/CVE-2025-49706/): Microsoft SharePoint Improper Authentication (medium 6.5, exploited in the wild)
- [CVE-2020-1210](https://insights.sbomify.com/CVE-2020-1210/): Microsoft SharePoint Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2020-1595](https://insights.sbomify.com/CVE-2020-1595/): Microsoft SharePoint Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2025-47163](https://insights.sbomify.com/CVE-2025-47163/): Microsoft SharePoint Server Remote Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-24955 and fix it if it is affected.

What it is: CVE-2023-24955 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 9 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2023-24955 in the wild since at least 26 Mar 2024, including in ransomware campaigns.

Affected product: Microsoft Sharepoint Enterprise Server. 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-2023-24955/ (Markdown: https://insights.sbomify.com/CVE-2023-24955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-24955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-24955
- OSV: https://osv.dev/vulnerability/CVE-2023-24955

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-24955/
Summaries are generated and may contain mistakes; the official description above is the record.