Exploit / PoCcriticalExploited in the wild

Critical Unpatched SharePoint Zero-Day Actively Exploited, Breaches 75+ Company Servers

The Hacker Newsby @TheHackersNewsJul 22, 2025 · 03:59 UTC (Jul 22, 2025)4 min read3 · 1 read

Read at thehackernews.com

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CVEs: CVE-2025-53770 CVE-2025-49704 CVE-2025-49706 CVE-2025-53771

Tags: cve-2025-53770 cve-2025-49704 cve-2025-49706 cve-2025-53771 exploit

Vulnerabilities mentioned

All

CVE	Vulnerability	CVSS	EPSS	Signals	Published
CVE-2025-49704 +1 related CVE CVE-2025-49706	Authenticated Code Injection RCE in Microsoft SharePoint	8.8 group max	100%	KEVRansomware	Jul 8, 2025 KEV Jul 22, 2025
CVE-2025-53770	Unauthenticated Deserialization RCE in Microsoft SharePoint Server on-premises	9.8	100%	KEVRansomwarePoC ×3	Jul 20, 2025 KEV Jul 20, 2025
CVE-2025-53771	Improper Authentication in Microsoft SharePoint Server Enables Network Spoofing	6.5	100%		Jul 20, 2025

From the original article

4 min read at thehackernews.com

A critical security vulnerability in Microsoft SharePoint Server has been weaponized as part of an "active, large-scale" exploitation campaign. The zero-day flaw, tracked as CVE-2025-53770 (CVSS score: 9. 8), has been described as a variant of CVE-2025-49704 (CVSS score: 8.

The Hacker News

By @TheHackersNews · thehackernews.com

Read the full article at The Hacker News

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.