CVE-2022-41223: Mitel MiVoice Connect RCE Vulnerability

CVE-2022-41223 Overview

CVE-2022-41223 is a code injection vulnerability in the Director database component of Mitel MiVoice Connect through version 19.3 (22.22.6100.0). The vulnerability allows an authenticated attacker to execute arbitrary code by exploiting insufficient restrictions on database data types. This flaw enables malicious actors with valid credentials to craft specially designed data that gets processed by the Director database component, leading to code execution within the context of the affected application.

Critical Impact

This vulnerability is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. Authenticated attackers on an adjacent network can achieve complete system compromise with high impact to confidentiality, integrity, and availability.

Affected Products

• Mitel MiVoice Connect versions through 19.3 (22.22.6100.0)
• Mitel MiVoice Connect Director database component
• All prior versions of MiVoice Connect containing the vulnerable Director component

Discovery Timeline

• 2022-11-22 - CVE-2022-41223 published to NVD
• 2025-11-03 - Last updated in NVD database

Technical Details for CVE-2022-41223

Vulnerability Analysis

This vulnerability (CWE-94: Improper Control of Generation of Code) exists in the Director database component of MiVoice Connect, a unified communications platform widely deployed in enterprise environments. The vulnerability stems from the application's failure to properly validate and restrict the data types accepted by the database component.

When an authenticated user submits crafted data to the Director database, the application processes this input without adequate type restrictions. This allows an attacker to inject and execute arbitrary code within the application's execution context. The adjacent network attack vector means the attacker must have network access to the same network segment as the vulnerable system, though no user interaction is required for exploitation.

Given that this vulnerability has been added to CISA's Known Exploited Vulnerabilities catalog, organizations should treat remediation as a high priority. Active exploitation indicates threat actors have successfully weaponized this vulnerability in real-world attacks.

Root Cause

The root cause of CVE-2022-41223 lies in insufficient input validation and inadequate restrictions on the database data types accepted by the Director component. The application fails to enforce strict data type constraints, allowing specially crafted malicious data to be interpreted and executed as code rather than being processed as regular data input. This represents a classic code injection pattern where untrusted input crosses a trust boundary without proper sanitization.

Attack Vector

The attack requires the following conditions to be exploited successfully:

1. Authentication Required: The attacker must possess valid credentials to access the MiVoice Connect system
2. Adjacent Network Access: The attacker must be on the same network segment as the target system
3. Crafted Payload Delivery: The attacker submits specially crafted data to the Director database component that exploits the insufficient data type restrictions

The exploitation mechanism involves crafting malicious database input that bypasses the weak data type restrictions. When this crafted data is processed by the Director component, it triggers code execution rather than being treated as legitimate data. Successful exploitation grants the attacker the ability to execute arbitrary code with the privileges of the affected application, potentially leading to full system compromise.

Detection Methods for CVE-2022-41223

Indicators of Compromise

• Unusual database queries or operations targeting the Director component with malformed or unexpected data types
• Unexpected process execution originating from the MiVoice Connect application context
• Anomalous network connections from MiVoice Connect servers to external or unusual internal destinations
• Evidence of unauthorized code execution or system commands in application logs

Detection Strategies

• Monitor Director database component logs for unusual queries containing special characters or unexpected data patterns
• Implement network segmentation monitoring to detect unauthorized adjacent network access attempts
• Deploy endpoint detection and response (EDR) solutions to identify suspicious process behaviors from MiVoice Connect services
• Configure SIEM rules to correlate authentication events with subsequent suspicious database activities

Monitoring Recommendations

• Enable verbose logging on MiVoice Connect Director database component
• Implement real-time alerting for any code execution attempts from database processes
• Monitor authentication logs for unusual login patterns or credential abuse
• Track network traffic patterns between the MiVoice Connect infrastructure and adjacent network segments

How to Mitigate CVE-2022-41223

Immediate Actions Required

• Apply the security patch provided by Mitel immediately as referenced in Mitel Advisory #22-0008
• Review and restrict network access to MiVoice Connect systems to minimize adjacent network exposure
• Audit user accounts with access to the Director component and remove unnecessary privileges
• Implement network segmentation to isolate MiVoice Connect infrastructure from general network access

Patch Information

Mitel has released a security advisory addressing this vulnerability. Organizations should review the official Mitel Security Advisories page and specifically consult Mitel Product Security Advisory 22-0008 for detailed patch information and update instructions. Given the known exploitation status documented by CISA's Known Exploited Vulnerabilities catalog, patching should be prioritized.

Workarounds

• Implement strict network access controls to limit adjacent network connectivity to MiVoice Connect systems
• Enforce principle of least privilege for all accounts with Director database component access
• Deploy web application firewalls or input validation proxies to filter malicious data patterns before reaching the Director component
• Consider temporary isolation of affected systems if immediate patching is not feasible

# Network segmentation example - restrict adjacent network access
# Configure firewall rules to limit access to MiVoice Connect Director component
iptables -A INPUT -p tcp --dport 443 -s <trusted_subnet> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP