CVE-2025-11142: VAPIX API mediaclip.cgi RCE Vulnerability

CVE-2025-11142 Overview

CVE-2025-11142 is a command injection vulnerability affecting the VAPIX API mediaclip.cgi endpoint in Axis network devices. The vulnerability stems from insufficient input validation in the API endpoint, which allows authenticated attackers with operator or administrator privileges to execute arbitrary commands on the affected device. This flaw (CWE-78: Improper Neutralization of Special Elements used in an OS Command) enables remote code execution when exploited by an authenticated user.

Critical Impact

Authenticated attackers can achieve remote code execution on vulnerable Axis network devices through the VAPIX API mediaclip.cgi endpoint, potentially compromising device integrity and availability.

Affected Products

• Axis network devices with VAPIX API enabled
• Devices running vulnerable firmware with mediaclip.cgi endpoint
• Systems where operator or administrator accounts are accessible

Discovery Timeline

• 2026-02-10 - CVE CVE-2025-11142 published to NVD
• 2026-02-10 - Last updated in NVD database

Technical Details for CVE-2025-11142

Vulnerability Analysis

This vulnerability resides in the mediaclip.cgi component of the VAPIX API, which is used in Axis network camera and video products. The core issue is improper neutralization of special elements used in OS commands (CWE-78), commonly known as OS command injection. When processing user-supplied input, the API fails to properly sanitize or validate data before passing it to system shell commands, creating an opportunity for command injection.

The attack requires authentication with at least operator-level privileges, which provides some limitation on the attack surface. However, once authenticated, an attacker can craft malicious requests to the mediaclip.cgi endpoint that inject arbitrary OS commands. The successful exploitation can lead to arbitrary code execution with the privileges of the web service process, potentially allowing attackers to compromise the integrity of the device and cause significant service disruption.

Root Cause

The root cause is insufficient input validation in the VAPIX API mediaclip.cgi endpoint. User-controlled input is not properly sanitized before being incorporated into OS command execution contexts. This allows metacharacters and command separators to be interpreted by the underlying shell, enabling command injection attacks.

Attack Vector

The attack is network-based and requires the attacker to first authenticate with valid operator or administrator credentials. Once authenticated, the attacker can send specially crafted HTTP requests to the mediaclip.cgi endpoint containing malicious payloads. These payloads exploit the lack of input validation to inject and execute arbitrary commands on the target system.

The vulnerability mechanism involves crafting malicious input that escapes the intended command context and introduces additional shell commands. For detailed technical information about the vulnerability and affected versions, refer to the Axis CVE-2025-11142 Advisory.

Detection Methods for CVE-2025-11142

Indicators of Compromise

• Unusual HTTP requests to /axis-cgi/mediaclip.cgi containing shell metacharacters such as ;, |, &, or backticks
• Unexpected process spawning from web server processes on Axis devices
• Anomalous outbound network connections from Axis camera devices
• Log entries showing malformed or suspicious parameters in VAPIX API calls

Detection Strategies

• Monitor web server logs for requests to mediaclip.cgi containing command injection patterns
• Implement network-based intrusion detection rules to flag suspicious VAPIX API traffic
• Deploy endpoint detection solutions capable of monitoring process creation on embedded Linux devices
• Audit authentication logs for unusual operator or administrator account activity

Monitoring Recommendations

• Enable verbose logging on Axis devices to capture detailed API request information
• Implement SIEM rules to correlate authentication events with subsequent API abuse patterns
• Monitor for privilege escalation attempts or lateral movement following device compromise
• Establish baseline behavior for VAPIX API usage to identify anomalous activity

How to Mitigate CVE-2025-11142

Immediate Actions Required

• Review and apply the latest firmware updates from Axis Communications as referenced in the security advisory
• Audit operator and administrator accounts, removing unnecessary privileged access
• Implement network segmentation to limit exposure of Axis devices to untrusted networks
• Enable additional access controls and monitoring on devices with VAPIX API enabled

Patch Information

Axis Communications has published a security advisory addressing this vulnerability. Organizations should consult the Axis CVE-2025-11142 Advisory for specific firmware versions and patch availability. Apply the recommended firmware updates as soon as possible to remediate this vulnerability.

Workarounds

• Restrict network access to the VAPIX API to trusted management networks only using firewall rules or VLANs
• Implement strong authentication controls and multi-factor authentication where supported
• Disable or restrict access to the mediaclip.cgi endpoint if the functionality is not required
• Deploy a web application firewall (WAF) or reverse proxy with input validation rules to filter malicious requests

# Example network isolation configuration (firewall rule)
# Restrict VAPIX API access to management network only
iptables -A INPUT -p tcp --dport 80 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP