CVE-2025-8762
📋 TL;DR
This vulnerability allows physical attackers to bypass access controls on INSTAR 2K+ and 4K cameras via the UART interface. Attackers with physical access can manipulate the device to gain unauthorized control. Only users of these specific camera models with vulnerable firmware are affected.
💻 Affected Systems
- INSTAR 2K+
- INSTAR 4K
⚠️ 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
Complete device compromise allowing attackers to install malicious firmware, steal credentials, or use the device as an entry point into the network.
Likely Case
Local attackers with physical access can extract sensitive data, modify device configuration, or disable security features.
If Mitigated
With proper physical security controls, the risk is limited to authorized personnel only.
🎯 Exploit Status
Exploit details are publicly disclosed in the modzero report. Attack requires physical access to UART pins and basic hardware skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with INSTAR for updated firmware
Vendor Advisory: https://www.instar.com/en/support/security-advisories/
Restart Required: Yes
Instructions:
1. Check INSTAR website for security advisory. 2. Download latest firmware for your model. 3. Upload via web interface. 4. Reboot device.
🔧 Temporary Workarounds
Physical Security Enhancement
allSecure devices in locked enclosures to prevent physical access to UART interface
UART Interface Disable
allPhysically disable or obscure UART pins if device functionality allows
🧯 If You Can't Patch
- Deploy cameras in physically secure locations with restricted access
- Implement network segmentation to isolate cameras from critical systems
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface: Settings > System > FirmwareCheck Version:
Check via web interface or SSH if enabled: cat /etc/versionVerify Fix Applied:
Confirm firmware version is newer than 3.11.1 Build 1124📡 Detection & Monitoring
Log Indicators:
- Unexpected device reboots
- Configuration changes without authorization
- Failed login attempts via console
Network Indicators:
- Unusual outbound connections from camera
- Changes in device network behavior
SIEM Query:
source="camera_logs" AND (event="reboot" OR event="config_change")