CVE-2025-48927
📋 TL;DR
The TeleMessage service exposes a Spring Boot Actuator heap dump endpoint at /heapdump, allowing attackers to retrieve memory contents. This vulnerability affects all TeleMessage deployments using vulnerable configurations. Attackers can exploit this to extract sensitive information like credentials and session tokens from memory.
💻 Affected Systems
- TeleMessage service
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of sensitive data including authentication credentials, encryption keys, and user messages stored in memory, potentially leading to account takeover and data breaches.
Likely Case
Extraction of sensitive information from memory leading to credential theft, session hijacking, and unauthorized access to user data.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external access to the vulnerable endpoint.
🎯 Exploit Status
Actively exploited in the wild since May 2025. Simple HTTP GET request to /heapdump endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2025-05-05
Vendor Advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-48927
Restart Required: Yes
Instructions:
1. Update TeleMessage to version after 2025-05-05. 2. Restart the service. 3. Verify heap dump endpoint is no longer publicly accessible.
🔧 Temporary Workarounds
Disable heap dump endpoint
allConfigure Spring Boot to disable or secure the heap dump actuator endpoint
management.endpoint.heapdump.enabled=false
Restrict endpoint access
allConfigure network firewall or application security to restrict access to /heapdump endpoint
🧯 If You Can't Patch
- Implement strict network segmentation to isolate TeleMessage service from untrusted networks
- Deploy web application firewall (WAF) with rules to block requests to /heapdump endpoint
🔍 How to Verify
Check if Vulnerable:
Test if HTTP GET request to /heapdump endpoint returns heap dump file. Use: curl -v http://<host>:<port>/heapdumpCheck Version:
Check TeleMessage version in application logs or configuration filesVerify Fix Applied:
Verify /heapdump endpoint returns 404 or access denied. Use: curl -v http://<host>:<port>/heapdump📡 Detection & Monitoring
Log Indicators:
- HTTP GET requests to /heapdump endpoint
- Large file downloads from actuator endpoints
- Unusual memory access patterns
Network Indicators:
- HTTP requests to /heapdump path
- Large outbound transfers from TeleMessage service
SIEM Query:
source="telemessage" AND (url_path="/heapdump" OR user_agent="*curl*" OR bytes_out>1000000)