CVE-2025-0836
📋 TL;DR
This CVE describes a broken access control vulnerability in Milestone Systems XProtect VMS where users with read-only access to the Management Server can perform read/write operations through the MIP Webhooks API. This allows unauthorized modification of webhook configurations. Organizations using affected XProtect VMS versions with role-based access control are impacted.
💻 Affected Systems
- Milestone Systems XProtect VMS
⚠️ 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
Attackers with read-only access could modify webhook configurations to exfiltrate sensitive surveillance data, disrupt monitoring systems, or create persistent backdoors through malicious webhooks.
Likely Case
Internal users with limited permissions could accidentally or intentionally modify webhook settings, causing monitoring disruptions or data leakage to unauthorized endpoints.
If Mitigated
With proper network segmentation and strict access controls, impact is limited to potential configuration changes within the isolated VMS environment.
🎯 Exploit Status
Exploitation requires valid user credentials with read-only access. Attack involves simple API calls to modify webhook configurations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Cumulative patch 2024.4 or later
Vendor Advisory: https://supportcommunity.milestonesys.com/s/article/CVE-2025-0836-XProtect-MIP-API-broken-access-control?language=en_US
Restart Required: Yes
Instructions:
1. Download cumulative patch 2024.4 from Milestone support portal. 2. Backup current configuration. 3. Apply patch following vendor instructions. 4. Restart XProtect services. 5. Verify patch installation.
🔧 Temporary Workarounds
Restrict API Access
allLimit network access to MIP API endpoints to only authorized administrative systems
Use firewall rules to restrict access to port 443/tcp on XProtect servers to specific administrative IPs
Review User Permissions
windowsAudit and minimize read-only user accounts with Management Server access
Review XProtect user roles and remove unnecessary read-only permissions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate XProtect Management Server from general network access
- Enable detailed logging for all MIP API access and monitor for unauthorized configuration changes
🔍 How to Verify
Check if Vulnerable:
Check XProtect version in Management Client under Help > About. If version is prior to 2024.4 cumulative patch, system is vulnerable.Check Version:
In XProtect Management Client: Help > About displays version informationVerify Fix Applied:
After patching, verify version shows 2024.4 or later. Test with read-only user account attempting to modify webhook via MIP API - should be denied.📡 Detection & Monitoring
Log Indicators:
- Failed authorization attempts for MIP API write operations from read-only users
- Unexpected webhook configuration changes
Network Indicators:
- API POST/PUT requests to /api/webhooks from non-admin IP addresses
- Unusual outbound connections from webhook endpoints
SIEM Query:
source="XProtect" AND (event_type="api_access" AND user_role="readonly" AND http_method IN ("POST", "PUT", "DELETE"))