CVE-2025-55319

8.8 HIGH

📋 TL;DR

This vulnerability allows remote command injection in Agentic AI and Visual Studio Code, enabling unauthorized attackers to execute arbitrary code over a network. It affects systems running vulnerable versions of these applications, particularly when exposed to untrusted inputs.

💻 Affected Systems

Products:
  • Agentic AI
  • Visual Studio Code
Versions: Specific versions not yet published in advisory
Operating Systems: Windows, Linux, macOS
Default Config Vulnerable: ⚠️ Yes
Notes: Affects systems where these applications process untrusted input from network sources. Exact version ranges will be specified in Microsoft's security advisory.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise leading to data theft, ransomware deployment, or persistent backdoor installation across the network.

🟠

Likely Case

Unauthorized code execution leading to data exfiltration, lateral movement, or installation of cryptocurrency miners.

🟢

If Mitigated

Limited impact due to network segmentation, input validation, and least privilege controls preventing successful exploitation.

🌐 Internet-Facing: HIGH - Network-accessible attack vector allows remote exploitation without authentication.
🏢 Internal Only: MEDIUM - Requires internal network access but can still lead to significant compromise if exploited.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Command injection vulnerabilities typically have low exploitation complexity once the attack vector is understood. No public exploit code is currently available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: To be specified in Microsoft security update

Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55319

Restart Required: Yes

Instructions:

1. Monitor Microsoft's security advisory for patch release. 2. Apply security updates through official channels. 3. Restart affected applications/services. 4. Verify patch installation.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict network access to affected applications using firewalls or network policies

Input Validation

all

Implement strict input validation and sanitization for all network inputs

🧯 If You Can't Patch

  • Isolate affected systems from untrusted networks and internet access
  • Implement application allowlisting and restrict execution privileges

🔍 How to Verify

Check if Vulnerable:

Check application versions against Microsoft's security advisory when published

Check Version:

For VS Code: code --version; For Agentic AI: Check application settings or documentation

Verify Fix Applied:

Verify installed version matches patched version from Microsoft advisory

📡 Detection & Monitoring

Log Indicators:

  • Unusual process execution from application context
  • Suspicious command-line arguments in application logs
  • Failed authentication attempts followed by command execution

Network Indicators:

  • Unexpected outbound connections from application
  • Command and control traffic patterns
  • Unusual network payloads to application ports

SIEM Query:

Process creation where parent process contains 'code' OR 'agentic' AND command line contains suspicious patterns (e.g., 'cmd.exe', 'powershell', 'bash -c')

🔗 References

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