CVE-2025-11540
📋 TL;DR
A path traversal vulnerability in Sharp Display Solutions projectors allows attackers to read arbitrary files on the device's filesystem. This affects organizations using vulnerable Sharp projector models, potentially exposing sensitive configuration files or credentials stored on the projector.
💻 Affected Systems
- Sharp Display Solutions projectors
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of projector configuration, theft of stored credentials, exposure of network settings, and potential lateral movement to other network devices.
Likely Case
Unauthorized access to configuration files containing network settings, admin credentials, and projector operational data.
If Mitigated
Limited exposure of non-sensitive system files if proper network segmentation and access controls are implemented.
🎯 Exploit Status
Path traversal vulnerabilities typically require minimal technical skill to exploit once details are known
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory
Vendor Advisory: https://sharp-displays.jp.sharp/global/support/info/PJ-CVE-2025-11540.html
Restart Required: Yes
Instructions:
1. Visit Sharp Display Solutions support portal 2. Check for firmware updates for your projector model 3. Download and apply latest firmware 4. Restart projector to complete installation
🔧 Temporary Workarounds
Network Segmentation
allIsolate projectors on separate VLAN with restricted access
Access Control Lists
allImplement firewall rules to restrict projector management interface access
🧯 If You Can't Patch
- Remove projectors from internet-facing networks
- Implement strict network access controls to projector management interfaces
🔍 How to Verify
Check if Vulnerable:
Check projector firmware version against vendor advisory and attempt path traversal test if authorizedCheck Version:
Check projector web interface or physical display for firmware versionVerify Fix Applied:
Verify firmware version matches patched version from vendor and test path traversal is no longer possible📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in projector logs
- Multiple ../ sequences in HTTP requests
Network Indicators:
- HTTP requests containing path traversal sequences to projector IPs
SIEM Query:
http.url:*../* AND dst_ip:projector_subnet