# CVE-2025-53770: Microsoft SharePoint Server Remote Code Execution Vulnerability

> CVE-2025-53770: Microsoft SharePoint Server Remote Code Execution Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-53770
Last updated: 2026-08-04T05:16:34Z

- Published: 2025-07-20 01:06 UTC · Updated: 2026-08-04 05:16 UTC · Assigner: microsoft
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:W/RC:C
- EPSS: 100.0%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-07-20, federal due date 2025-07-21, ransomware use: Known
- CWE: CWE-502

## Description

Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability.  In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.

## CISA required action

Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

## Affected vendors and products

- Microsoft: Microsoft SharePoint Enterprise Server 2016
- Microsoft: Microsoft SharePoint Server 2019
- Microsoft: Microsoft SharePoint Server Subscription Edition

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-53770)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-53770)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-53770 · Markdown: https://rewindex.com/cve/CVE-2025-53770.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-53770 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:14.787Z