CVE-2025-42994
📋 TL;DR
CVE-2025-42994 is a denial-of-service vulnerability in SAP MDM Server's ReadString function where specially crafted packets can cause memory access violations, crashing the server process. This affects availability of SAP MDM Server with no data compromise. Organizations running vulnerable SAP MDM Server versions are affected.
💻 Affected Systems
- SAP MDM Server
⚠️ 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 unavailability of SAP MDM Server requiring manual restart, disrupting business processes dependent on master data management.
Likely Case
Service disruption requiring server restart, causing temporary unavailability of master data services.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing quick detection and recovery.
🎯 Exploit Status
The vulnerability requires sending specially crafted packets to the MDM Server, which appears straightforward based on the description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check SAP Note 3610006 for specific patch versions
Vendor Advisory: https://me.sap.com/notes/3610006
Restart Required: Yes
Instructions:
1. Review SAP Note 3610006 for your specific MDM version. 2. Apply the security patch from SAP Support Portal. 3. Restart the SAP MDM Server service. 4. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to SAP MDM Server to only trusted systems and networks.
Firewall Rules
allImplement strict firewall rules to limit connections to SAP MDM Server from authorized IP addresses only.
🧯 If You Can't Patch
- Implement strict network access controls to limit who can communicate with the SAP MDM Server
- Deploy intrusion detection systems to monitor for anomalous traffic patterns targeting the MDM Server
🔍 How to Verify
Check if Vulnerable:
Check SAP MDM Server version against affected versions listed in SAP Note 3610006. If unpatched and within affected version range, system is vulnerable.Check Version:
Check SAP MDM Server version through SAP administration tools or system information commands specific to your installation.Verify Fix Applied:
Verify patch application by checking version after applying SAP security patch and confirming it matches patched version in SAP Note 3610006.📡 Detection & Monitoring
Log Indicators:
- SAP MDM Server process crashes or unexpected terminations
- Memory access violation errors in server logs
- Service restart events without normal shutdown
Network Indicators:
- Unusual packet patterns sent to SAP MDM Server port
- Multiple connection attempts with malformed data
SIEM Query:
source="sap_mdm_logs" AND (event_type="crash" OR error_message="access violation" OR process_name="mdmserver" AND status="terminated")