Executive Risk Summary
"A deserialization of untrusted data vulnerability in Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network, with exploits existing in the wild. Microsoft is preparing a comprehensive update to address this vulnerability, but in the meantime, users are advised to apply the provided mitigation to protect against exploitation."
Operational Audit Arsenal
Target Type Executable
Target Asset w3wp.exe
Standard Path %windir%\System32\inetsrv\w3wp.exe
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: w3wp.exe (Executable)
$Targets = 'w3wp.exe'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")
Get-ChildItem -Path $SearchPaths -Include $Targets -Recurse -ErrorAction SilentlyContinue |
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}Patch Impact Forecast
Reboot Required Likely
SharePoint services
Internal Work Notes
Urgent: Apply mitigation for CVE-2025-53770 in Microsoft SharePoint Server to prevent remote code execution attacks, pending official patch release.
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
MSRC Advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770
Official Advisoryhttps://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/
Official Advisoryhttps://github.com/kaizensecurity/CVE-2025-53770
MSRC Advisoryhttps://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/
Official Advisoryhttps://news.ycombinator.com/item?id=44629710
Official Advisoryhttps://research.eye.security/sharepoint-under-siege/
Official Advisoryhttps://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally
Official Advisoryhttps://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/
Official Advisoryhttps://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770
Official Advisoryhttps://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw
Official Advisoryhttps://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/
Official Advisoryhttps://x.com/Shadowserver/status/1946900837306868163
Official Advisoryhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770
Related Microsoft Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.