CVE-2025-0325 Overview
A vulnerability exists in the Guard Tour VAPIX API of Axis network devices that allows authenticated attackers to exploit improper input validation in API parameters. This flaw enables attackers to pass arbitrary values to API calls, which can be incorrectly processed, resulting in a denial of service condition that blocks access to the guard tour configuration page in the device's web interface.
Critical Impact
Authenticated attackers can block administrative access to guard tour configuration functionality on affected Axis devices, disrupting security surveillance operations.
Affected Products
- Axis network devices with Guard Tour VAPIX API functionality
- Axis devices running vulnerable firmware versions (see vendor advisory for specific versions)
Discovery Timeline
- 2025-06-02 - CVE CVE-2025-0325 published to NVD
- 2025-06-02 - Last updated in NVD database
Technical Details for CVE-2025-0325
Vulnerability Analysis
This vulnerability is classified under CWE-628 (Function Call with Incorrectly Specified Arguments), which occurs when a function is called with arguments that are not correctly validated or processed. In this case, the Guard Tour VAPIX API fails to properly validate parameter values, accepting arbitrary input that can disrupt normal operation.
The VAPIX API is Axis's proprietary API used for device management and configuration. The guard tour functionality allows administrators to configure automated PTZ (Pan-Tilt-Zoom) camera movements for surveillance purposes. When exploited, this vulnerability prevents legitimate administrators from accessing and modifying guard tour configurations through the web interface.
Root Cause
The root cause of this vulnerability lies in insufficient input validation within the Guard Tour VAPIX API handler. The API accepts parameter values without proper boundary checking or sanitization, allowing arbitrary values to be processed. This improper handling of function arguments leads to a state where the web interface configuration page becomes inaccessible.
Attack Vector
The attack can be executed over the network by an authenticated user with low privileges. The attacker sends specially crafted API requests with arbitrary parameter values to the Guard Tour VAPIX endpoint. Once the malformed request is processed, the guard tour configuration page becomes blocked, preventing legitimate administrative access.
The vulnerability requires authentication, limiting the attack surface to users who already have some level of access to the device. However, in environments where multiple users have device access or where credentials may have been compromised, this presents a significant risk to operational continuity.
Detection Methods for CVE-2025-0325
Indicators of Compromise
- Unexpected failures when accessing guard tour configuration pages in the Axis device web interface
- Anomalous VAPIX API requests containing unusual or malformed parameter values
- Authentication logs showing repeated API calls to guard tour endpoints from suspicious sources
- User reports of inability to modify guard tour settings despite having proper permissions
Detection Strategies
- Monitor VAPIX API traffic for requests with abnormal parameter values targeting guard tour endpoints
- Implement web application firewall rules to detect and block malformed API requests
- Review device access logs for patterns of API abuse from authenticated accounts
- Configure alerts for guard tour configuration access failures that exceed normal thresholds
Monitoring Recommendations
- Enable comprehensive logging on Axis devices to capture all API interactions
- Implement network monitoring to detect unusual traffic patterns to device management interfaces
- Establish baseline metrics for guard tour configuration access to identify anomalies
- Consider implementing session monitoring for privileged device management accounts
How to Mitigate CVE-2025-0325
Immediate Actions Required
- Review and restrict user access to Axis devices to only necessary personnel
- Implement network segmentation to limit access to device management interfaces
- Monitor for exploitation attempts by reviewing API access logs
- Contact Axis support for guidance on available patches or firmware updates
Patch Information
Axis has published a security advisory addressing this vulnerability. Organizations should review the Axis Security Advisory for CVE-2025-0325 for specific patch information and affected firmware versions. Apply the recommended firmware updates as soon as they become available through official Axis channels.
Workarounds
- Restrict network access to Axis device management interfaces using firewall rules
- Implement strong authentication controls and regularly rotate credentials for device access
- Consider disabling the guard tour feature if not operationally required until patches are applied
- Use VPN or other secure access methods to limit exposure of device management interfaces
# Example: Restrict access to Axis device management interface
# Add firewall rules to limit access to trusted management networks only
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
