CVE-2025-2263
📋 TL;DR
This vulnerability allows unauthenticated remote attackers to execute arbitrary code on Sante PACS Server systems by exploiting a stack-based buffer overflow during login. Attackers can send specially crafted encrypted credentials to trigger the overflow and potentially gain full system control. All systems running vulnerable versions of Sante PACS Server with the web server enabled are affected.
💻 Affected Systems
- Sante PACS Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, ransomware deployment, or use as a pivot point into the healthcare network.
Likely Case
Remote code execution resulting in installation of backdoors, credential harvesting, or deployment of ransomware on medical imaging systems.
If Mitigated
Denial of service or failed login attempts if proper network segmentation and monitoring are in place.
🎯 Exploit Status
The vulnerability is straightforward to exploit due to the fixed buffer size and unauthenticated access. Public exploit code is not confirmed but likely to emerge given the high CVSS score.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.santesoft.com/security-advisory
Restart Required: Yes
Instructions:
1. Contact Santesoft for the security patch. 2. Apply the patch to all affected Sante PACS Server installations. 3. Restart the Sante PACS Server service. 4. Verify the fix by testing login functionality.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Sante PACS Server web interface to only trusted IP addresses.
Configure firewall rules to allow only specific IP ranges to access the Sante PACS Server web port (typically 80/443)
Disable Web Server
windowsTemporarily disable the web server component if not required for operations.
Stop the Sante PACS Server web service or disable it in configuration
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to the Sante PACS Server
- Deploy intrusion detection/prevention systems to monitor for buffer overflow attempts on the login endpoint
🔍 How to Verify
Check if Vulnerable:
Check Sante PACS Server version against vendor advisory. Test with a long encrypted credential to see if the service crashes.Check Version:
Check Sante PACS Server about dialog or configuration files for version informationVerify Fix Applied:
Verify the installed version matches the patched version from vendor. Test login functionality with normal and long credentials.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts with unusually long credential strings
- Sante PACS Server service crashes or restarts
- Unusual process creation following login attempts
Network Indicators:
- HTTP POST requests to login endpoint with abnormally large payloads
- Traffic patterns suggesting buffer overflow exploitation
SIEM Query:
source="sante-pacs" AND (event="login_failed" AND data_size>1024) OR event="service_crash"