Threat Actors Ramp Up Public App Exploits as ToolShell Gains Traction
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-53770 | Unauthenticated Deserialization RCE in Microsoft SharePoint Server on-premises | 9.8 | 100% | KEVRansomwarePoC ×3 | KEV |
| CVE-2025-53771 | Improper Authentication in Microsoft SharePoint Server Enables Network Spoofing | 6.5 | 100% |
From the original article
2 min read at infosecurity-magazine.com
The ToolShell exploit, affecting on-premises Microsoft SharePoint servers, has driven a rise in threat actors exploiting public-facing applications for initial access. In the last quarter, this tactic appeared in over 60% Cisco Talos Incident Response (Talos IR) engagements, an increase from 10% in the previous quarter.
By Beth Maundrill · infosecurity-magazine.com
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