What is CVE-2025-53770? A Critical Microsoft SharePoint Vulnerability and How to Respond
hackerone.com | vulnerability | Critical | Actively exploited | CVE-2025-53770 | #active-exploitation | #rce | #microsoft | #threat-hunting | #sharepoint | #patching | #cve-2025-53770
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.
- CVE
- CVE-2025-53770
- CVSS
- 9.8
- Published
- Collected
--- 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