CVE-2025-58730
📋 TL;DR
CVE-2025-58730 is a use-after-free vulnerability in Inbox COM Objects that allows an unauthorized attacker to execute arbitrary code on the local system. This affects Windows systems with vulnerable COM components, potentially enabling local privilege escalation or remote code execution if combined with other vulnerabilities.
💻 Affected Systems
- Microsoft Windows
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 24h2 by Microsoft
Windows 11 25h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining SYSTEM privileges, installing persistent malware, or pivoting to other systems on the network.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, access sensitive data, or maintain persistence on compromised systems.
If Mitigated
Limited impact with proper endpoint protection, application control, and restricted user privileges preventing successful exploitation.
🎯 Exploit Status
Requires local access or initial foothold; use-after-free vulnerabilities typically require precise timing and memory manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update Guide for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-58730
Restart Required: Yes
Instructions:
1. Apply latest Windows security updates via Windows Update. 2. For enterprise: Deploy patches through WSUS or Microsoft Endpoint Configuration Manager. 3. Verify patch installation with systeminfo or Get-HotFix PowerShell command.
🔧 Temporary Workarounds
Restrict COM Object Access
windowsLimit access to vulnerable COM objects via Component Services administrative tool
dcomcnfg.exe
Navigate to Component Services > Computers > My Computer > DCOM Config
Enable Exploit Protection
windowsUse Windows Defender Exploit Guard to mitigate memory corruption attacks
Set-ProcessMitigation -PolicyFilePath exploit_protection.xml
🧯 If You Can't Patch
- Implement strict application control policies to prevent unauthorized code execution
- Enforce principle of least privilege and use standard user accounts instead of administrative accounts
🔍 How to Verify
Check if Vulnerable:
Check system for missing security updates related to COM components; review Microsoft Security Update Guide for affected versions.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify KB patch is installed via 'systeminfo | findstr KB' or 'Get-HotFix -Id KBxxxxxxx' in PowerShell.📡 Detection & Monitoring
Log Indicators:
- Unusual COM object activation events in Windows Event Logs
- Process creation from COM-related executables with suspicious parent processes
Network Indicators:
- Lateral movement attempts following local exploitation
- Command and control traffic from newly elevated processes
SIEM Query:
EventID=4688 AND (NewProcessName="*\cmd.exe" OR NewProcessName="*\powershell.exe") AND ParentProcessName="*\dllhost.exe"