CVE-2025-27431
📋 TL;DR
SAP NetWeaver Application Server Java's user management functionality contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts. When legitimate users access the affected functionality, these scripts execute in their browsers, potentially enabling session hijacking, data theft, or unauthorized actions. Organizations using vulnerable SAP NetWeaver versions are affected.
💻 Affected Systems
- SAP NetWeaver Application Server Java
⚠️ 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
Attackers could steal administrator credentials, perform unauthorized user management actions, or compromise sensitive business data through victim browsers.
Likely Case
Attackers with access to user management functionality could inject malicious scripts that steal session cookies or perform unauthorized actions when administrators view affected pages.
If Mitigated
With proper input validation and output encoding, the risk is reduced to minimal, though the vulnerability still exists in the codebase.
🎯 Exploit Status
Exploitation requires access to user management functionality; typically requires authenticated access
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: As specified in SAP Note 3567246
Vendor Advisory: https://me.sap.com/notes/3567246
Restart Required: Yes
Instructions:
1. Review SAP Note 3567246 for specific patch details. 2. Apply the SAP Security Patch Day updates. 3. Restart affected SAP NetWeaver instances. 4. Verify the fix by testing user management functionality.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement additional input validation and output encoding for user management fields
Custom ABAP/Java code modifications required
Content Security Policy
allImplement strict Content Security Policy headers to mitigate XSS impact
Configure web server/CSP headers for SAP applications
🧯 If You Can't Patch
- Restrict access to user management functionality to only essential personnel
- Implement web application firewall rules to detect and block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check SAP system version against affected versions in SAP Note 3567246Check Version:
Transaction SM51 or OS-level checks for SAP kernel versionVerify Fix Applied:
Test user management functionality with XSS payloads after patch application📡 Detection & Monitoring
Log Indicators:
- Unusual user management activity
- JavaScript payloads in user input fields
- Multiple failed XSS attempts
Network Indicators:
- Suspicious patterns in HTTP requests to user management endpoints
SIEM Query:
source="sap_audit_log" AND (event="user_management" AND (payload CONTAINS "<script>" OR payload CONTAINS "javascript:"))