# CVE-2020-1069: Microsoft SharePoint Server Remote Code Execution Vulnerability

> An authenticated attacker can execute arbitrary code in the SharePoint application pool context by exploiting unsafe ASP.Net web controls.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 May 2020
- **Updated:** 19 Aug 2026
- **Also known as:** GHSA-hgfm-gjhm-cx48

## What is CVE-2020-1069?

CVE-2020-1069 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 21 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A remote code execution vulnerability exists in Microsoft SharePoint Server when it fails to properly identify and filter unsafe ASP.Net web controls. An authenticated attacker who successfully exploited the vulnerability could use a specially crafted page to perform actions in the security context of the SharePoint application pool process.
To exploit the vulnerability, an authenticated user must create and invoke a specially crafted page on an affected version of Microsoft SharePoint Server.
The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles processing of created content.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2020-1069?

It affects 3 products.


Products: Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.

## How do I fix CVE-2020-1069?

No fix has been published for CVE-2020-1069 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-1069 being exploited?

There is no known exploitation of CVE-2020-1069 in the wild and no public exploit code.

## 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-2023-24955](https://insights.sbomify.com/CVE-2023-24955/): Microsoft SharePoint Server Code Injection (high 7.2, 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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-1069 and fix it if it is affected.

What it is: CVE-2020-1069 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 21 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-1069 in the wild and no public exploit code.

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-2020-1069/ (Markdown: https://insights.sbomify.com/CVE-2020-1069/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-1069
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-1069
- OSV: https://osv.dev/vulnerability/CVE-2020-1069

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-1069/
Summaries are generated and may contain mistakes; the official description above is the record.