CVE-2026-0758
📋 TL;DR
This is a command injection vulnerability in the mcp-server-siri-shortcuts software that allows local attackers to escalate privileges. Attackers with initial low-privileged access can inject malicious commands through the shortcutName parameter to execute arbitrary code as the service account. Only systems running vulnerable versions of mcp-server-siri-shortcuts are affected.
💻 Affected Systems
- mcp-server-siri-shortcuts
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining root/system-level privileges, installing persistent backdoors, and accessing all data on the system.
Likely Case
Privilege escalation from low-privileged user to service account, enabling lateral movement within the environment and data exfiltration.
If Mitigated
Limited to low-privileged user capabilities with no privilege escalation possible.
🎯 Exploit Status
Requires existing low-privileged access to the system. Command injection is straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-26-024/
Restart Required: Yes
Instructions:
1. Check current mcp-server-siri-shortcuts version. 2. Update to latest patched version from official vendor source. 3. Restart the mcp-server-siri-shortcuts service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Enforcement
allImplement strict input validation for shortcutName parameter to reject special characters and shell metacharacters
# Configure application to validate shortcutName parameter
# Example regex: ^[a-zA-Z0-9_-]+$
Service Account Restriction
linuxRun mcp-server-siri-shortcuts with minimal necessary privileges
# Create dedicated low-privilege user
sudo useradd -r -s /bin/false mcp-service
# Run service with restricted user
sudo -u mcp-service mcp-server-siri-shortcuts
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems running vulnerable software
- Apply principle of least privilege to all user accounts and service accounts
🔍 How to Verify
Check if Vulnerable:
Check if mcp-server-siri-shortcuts is installed and running with unpatched versionCheck Version:
mcp-server-siri-shortcuts --version or check package managerVerify Fix Applied:
Verify mcp-server-siri-shortcuts version is updated to patched version and test shortcutName parameter validation📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns from mcp-server-siri-shortcuts process
- Privilege escalation attempts in system logs
- Suspicious shortcutName parameter values containing shell metacharacters
Network Indicators:
- Unexpected outbound connections from mcp-server-siri-shortcuts service account
SIEM Query:
process_name="mcp-server-siri-shortcuts" AND (command_line CONTAINS ";" OR command_line CONTAINS "|" OR command_line CONTAINS "&")