CVE-2025-64671
📋 TL;DR
This command injection vulnerability in Copilot allows unauthorized attackers to execute arbitrary code on affected systems by injecting malicious commands. It affects systems running vulnerable versions of Microsoft Copilot where the attacker can interact with the command interface.
💻 Affected Systems
- Microsoft Copilot
📦 What is this software?
Github Copilot by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the affected system, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or execution of arbitrary commands within the Copilot context, potentially leading to data exfiltration or further system compromise.
If Mitigated
Limited impact due to proper input validation and sandboxing, with commands failing to execute or being restricted to safe operations.
🎯 Exploit Status
Command injection vulnerabilities typically have low exploitation complexity once the injection point is identified; requires attacker access to the vulnerable interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft advisory for specific patched versions
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64671
Restart Required: Yes
Instructions:
1. Visit the Microsoft Security Response Center advisory
2. Identify the patched version for your Copilot installation
3. Update Copilot to the latest secure version
4. Restart the system or Copilot service as required
🔧 Temporary Workarounds
Disable Copilot command execution
allTemporarily disable command execution features in Copilot to prevent injection attacks
# Configuration varies by platform; check Copilot documentation for disable commands
Implement input validation
allAdd strict input validation to sanitize user inputs before processing
# Implementation depends on specific deployment; review code for command injection points
🧯 If You Can't Patch
- Restrict access to Copilot interface to authorized users only
- Implement network segmentation to isolate Copilot systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Check your Copilot version against the vulnerable versions listed in Microsoft's advisoryCheck Version:
# For Windows: Check Copilot version in Settings or About section
# For command line: Specific command varies by installation methodVerify Fix Applied:
Confirm Copilot is updated to a version not listed as vulnerable in the advisory📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in Copilot logs
- Error messages related to command parsing failures
- Unexpected process spawns from Copilot
Network Indicators:
- Unexpected outbound connections from Copilot processes
- Command and control traffic patterns
SIEM Query:
Example: 'source="copilot" AND (command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*")'