CVE-2025-26680
📋 TL;DR
This vulnerability in Windows Standards-Based Storage Management Service allows unauthorized attackers to cause denial of service by consuming system resources over a network. It affects Windows systems with this service enabled, potentially disrupting storage management functionality.
💻 Affected Systems
- Windows Standards-Based Storage Management Service
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption of Windows Standards-Based Storage Management Service, potentially affecting storage operations and management capabilities across the network.
Likely Case
Temporary service degradation or unavailability of storage management functions until resource consumption subsides or system is restarted.
If Mitigated
Minimal impact with proper network segmentation and access controls limiting exposure to the vulnerable service.
🎯 Exploit Status
The CWE-400 (Uncontrolled Resource Consumption) suggests relatively straightforward exploitation by sending crafted requests to exhaust service resources.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Microsoft Security Update for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26680
Restart Required: Yes
Instructions:
1. Apply the latest Windows security updates from Microsoft. 2. Restart affected systems to complete the patch installation. 3. Verify the service is running the patched version.
🔧 Temporary Workarounds
Disable Windows Standards-Based Storage Management Service
windowsTemporarily disable the vulnerable service if not required for operations
sc config WSSMService start= disabled
sc stop WSSMService
Restrict Network Access
windowsUse Windows Firewall to block inbound connections to the service port
netsh advfirewall firewall add rule name="Block WSSM" dir=in action=block protocol=TCP localport=[PORT]
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems running the vulnerable service
- Deploy network-based intrusion prevention systems to detect and block resource exhaustion attempts
🔍 How to Verify
Check if Vulnerable:
Check if Windows Standards-Based Storage Management Service is enabled and running: sc query WSSMServiceCheck Version:
wmic service where name="WSSMService" get name,pathnameVerify Fix Applied:
Verify Windows Update history contains the relevant security update KB number and check service version📡 Detection & Monitoring
Log Indicators:
- Unusual volume of requests to WSSMService in Windows Event Logs
- Service crash or restart events
- High resource consumption alerts
Network Indicators:
- Abnormal traffic patterns to service port (typically 5985/5986 for WS-Management)
- Multiple connection attempts from single sources
SIEM Query:
EventID=7036 AND ServiceName="WSSMService" | stats count by _time