CVE-2025-9524
📋 TL;DR
CVE-2025-9524 is an input validation vulnerability in Axis camera VAPIX API's port.cgi endpoint that can cause process crashes when exploited. This affects Axis network video products with vulnerable firmware versions. Attackers need viewer, operator, or administrator credentials to exploit this vulnerability.
💻 Affected Systems
- Axis network cameras with VAPIX API
⚠️ 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
Successful exploitation could cause denial of service through process crashes, potentially disrupting video surveillance and monitoring capabilities.
Likely Case
Authenticated attackers cause temporary service disruption through targeted crashes, requiring manual intervention to restore functionality.
If Mitigated
With proper access controls and network segmentation, impact is limited to temporary service disruption within isolated camera networks.
🎯 Exploit Status
Exploitation requires authenticated access but appears straightforward once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Axis security advisory for specific patched firmware versions
Vendor Advisory: https://www.axis.com/dam/public/f1/f0/1e/cve-2025-9524pdf-en-US-504220.pdf
Restart Required: Yes
Instructions:
1. Check Axis security advisory for affected products. 2. Download latest firmware from Axis website. 3. Upload firmware through camera web interface. 4. Reboot camera after installation.
🔧 Temporary Workarounds
Restrict VAPIX API Access
linuxLimit access to VAPIX API endpoints to trusted management networks only
iptables -A INPUT -p tcp --dport 80 -s TRUSTED_NETWORK -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s TRUSTED_NETWORK -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Implement Strong Authentication
allEnforce complex passwords and consider multi-factor authentication where supported
🧯 If You Can't Patch
- Segment camera network from critical infrastructure
- Implement strict access controls and monitor for authentication attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version against Axis security advisory; test authenticated access to port.cgi endpoint with malformed inputCheck Version:
Check camera web interface under Setup > System Options > Support > System Overview for firmware versionVerify Fix Applied:
Verify firmware version matches patched version from Axis advisory; test port.cgi endpoint with previously crashing inputs📡 Detection & Monitoring
Log Indicators:
- Multiple authentication failures followed by port.cgi access
- Process crash logs in system logs
- Unusual authentication patterns to camera web interface
Network Indicators:
- Multiple POST requests to /axis-cgi/port.cgi with malformed parameters
- Traffic spikes to camera management interface
SIEM Query:
source="camera_logs" AND (uri="/axis-cgi/port.cgi" OR process="httpd" AND event="crash")