# CVE-2025-54897: Microsoft SharePoint Remote Code Execution Vulnerability

> An authorized attacker can execute arbitrary code remotely via unsafe deserialization in Microsoft SharePoint.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **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:** 9 Sep 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-rvp7-398f-7v5c

## What is CVE-2025-54897?

CVE-2025-54897 is a high-severity unsafe deserialization vulnerability in Microsoft Sharepoint Server, published on 9 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2025-54897?

It affects 1 product.


Products: Microsoft Sharepoint Server.

## How do I fix CVE-2025-54897?

No fix has been published for CVE-2025-54897 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-54897 being exploited?

There is no known exploitation of CVE-2025-54897 in the wild and no public exploit code.

Public exploit code:

- https://github.com/themaxlpalfaboy/CVE-2025-54897-LAB (github_poc): https://github.com/themaxlpalfaboy/CVE-2025-54897-LAB

## Other vulnerabilities in Microsoft Sharepoint Server

- [CVE-2026-50522](https://insights.sbomify.com/CVE-2026-50522/): Microsoft SharePoint Deserialization of Untrusted Data Vulnerability (critical 9.8, exploited in the wild)
- [CVE-2026-58644](https://insights.sbomify.com/CVE-2026-58644/): Microsoft SharePoint Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2026-20963](https://insights.sbomify.com/CVE-2026-20963/): Microsoft SharePoint Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2025-53770](https://insights.sbomify.com/CVE-2025-53770/): Microsoft SharePoint Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2023-29357](https://insights.sbomify.com/CVE-2023-29357/): Microsoft SharePoint Server Privilege Escalation (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-54897 and fix it if it is affected.

What it is: CVE-2025-54897 is a high-severity unsafe deserialization vulnerability in Microsoft Sharepoint Server, published on 9 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-54897 in the wild and no public exploit code.

Affected product: Microsoft Sharepoint 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-2025-54897/ (Markdown: https://insights.sbomify.com/CVE-2025-54897/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-54897
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-54897
- OSV: https://osv.dev/vulnerability/CVE-2025-54897

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-54897/
Summaries are generated and may contain mistakes; the official description above is the record.