CVE-2025-54374
📋 TL;DR
CVE-2025-54374 is a one-click remote code execution vulnerability in Eidos Personal Data Management framework. Attackers can embed malicious eidos: URLs on websites to trigger the application's custom URL handler, executing arbitrary code on victims' machines when they visit the site or click the link. All users running Eidos versions 0.21.0 and below are affected.
💻 Affected Systems
- Eidos Personal Data Management Framework
📦 What is this software?
Eidos by Mayneyao
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary code with the privileges of the Eidos application user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Attackers create malicious websites or embed malicious links in phishing emails to compromise users who click them, leading to credential theft, data exfiltration, or lateral movement within networks.
If Mitigated
With proper network segmentation, application sandboxing, and user privilege restrictions, impact could be limited to the compromised user's context without affecting critical systems.
🎯 Exploit Status
Exploitation requires only a malicious website or link. The advisory includes technical details that could be used to create working exploits.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available as of October 3, 2025
Vendor Advisory: https://github.com/mayneyao/eidos/security/advisories/GHSA-qhhm-56qp-xr2r
Restart Required: No
Instructions:
No official patch available. Monitor the GitHub security advisory for updates and apply any future patches immediately.
🔧 Temporary Workarounds
Unregister Eidos URL Handler
allRemove the eidos: protocol handler registration from the operating system to prevent automatic launching of the application from malicious URLs.
Windows: reg delete "HKCU\Software\Classes\eidos" /f
Linux: Remove or modify .desktop files and mimeapps.list entries for eidos protocol
Browser URL Handler Blocking
allConfigure browsers to block or prompt before launching external applications from eidos: URLs.
Firefox: about:config -> network.protocol-handler.external.eidos = false
Chrome: chrome://settings/handlers -> Block eidos protocol
🧯 If You Can't Patch
- Uninstall Eidos completely until a patch is available
- Implement network filtering to block eidos: protocol traffic at perimeter firewalls and web proxies
🔍 How to Verify
Check if Vulnerable:
Check Eidos version: eidos --version. If version is 0.21.0 or lower, system is vulnerable. Also check if eidos: protocol handler is registered in OS.Check Version:
eidos --versionVerify Fix Applied:
No fix available to verify. When patch becomes available, verify version is above 0.21.0 and test that eidos: URLs no longer execute arbitrary code.📡 Detection & Monitoring
Log Indicators:
- Unexpected Eidos process launches from browser processes
- Eidos executing with unusual command-line arguments
- Network connections from Eidos to unexpected external IPs
Network Indicators:
- HTTP/HTTPS traffic containing eidos: URLs
- DNS requests for domains associated with known exploit kits
SIEM Query:
process_name:"eidos" AND parent_process_name IN ("chrome.exe", "firefox.exe", "msedge.exe", "safari")