---
id: 1208
title: "What is CVE-2025-53770? A Critical Microsoft SharePoint Vulnerability and How to Respond"
cve: CVE-2025-53770
cvss: 9.8
severity: critical
source_domain: hackerone.com
source_url: "https://www.hackerone.com/blog/cve-2025-53770-critical-sharepoint-vulnerability"
published_at: "2025-07-23 19:49"
tags: ["active-exploitation", "rce", "microsoft", "threat-hunting", "sharepoint", "patching", "cve-2025-53770"]
phying_url: "https://phying.com/item/1208"
lang: en
---

# What is CVE-2025-53770? A Critical Microsoft SharePoint Vulnerability and How to Respond

## Summary

CVE-2025-53770 is a critical Microsoft SharePoint vulnerability now under active exploitation. Learn how to respond, assess exposure, and improve visibility with proactive security strategies.

## Intelligence Metadata

- **Sources:** hackerone.com
- **CVE:** CVE-2025-53770
- **CVSS:** 9.8
- **Published:** 2025-07-23 19:49
- **Original:** https://www.hackerone.com/blog/cve-2025-53770-critical-sharepoint-vulnerability
- **Phying News:** https://phying.com/item/1208