✕

Rewterz Annual Threat Intelligence Report 2025 - Download Now

Request a Demo
Rewterz

Cisco UI Center Remote File Upload Flaw

July 20, 2025
Rewterz

STRRAT Malware – Active IOCs

July 21, 2025

CVE-2025-53770 – Microsoft SharePoint Zero-Day Vulnerability Exploit in the Wild

Severity

High

Analysis Summary

CVE-2025-53770

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.

Impact

  • Code Execution

Indicators of Compromise

CVE

  • CVE-2025-53770

Affected Vendors

  • Microsoft

Affected Products

  • Microsoft SharePoint Server

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

Microsoft Security Update Guide

Reading this advisory was a good start.

Make it a habit.

Rewterz publishes threat advisories ahead of mainstream cybersecurity media, informed by an AI-Native Autonomous SOC that sees regional threat actor activity in real time. Subscribe to receive each new advisory as it publishes, plus a monthly Middle East threat landscape brief drawn from our own SOC telemetry. For teams evaluating their detection coverage, a 30-minute consultation with a senior analyst is also available, at your pace, when you're ready.

Request a demo