CVE-2025-42890

10.0 CRITICAL

📋 TL;DR

SQL Anywhere Monitor (Non-GUI) contains hardcoded credentials that allow attackers to bypass authentication and execute arbitrary code. This affects all systems running vulnerable versions of SQL Anywhere Monitor, potentially compromising the entire database environment.

💻 Affected Systems

Products:
  • SQL Anywhere Monitor (Non-GUI)
Versions: Specific versions not detailed in advisory - check SAP Note 3666261 for exact affected versions
Operating Systems: All platforms running SQL Anywhere Monitor
Default Config Vulnerable: ⚠️ Yes
Notes: This affects the Non-GUI version specifically. The vulnerability exists in the default configuration.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise allowing attackers to execute arbitrary code, steal all database data, modify or delete data, and disrupt database operations.

🟠

Likely Case

Attackers gain administrative access to SQL Anywhere Monitor, allowing them to view sensitive database information and potentially execute commands on the underlying system.

🟢

If Mitigated

With proper network segmentation and access controls, impact is limited to the SQL Anywhere Monitor component only.

🌐 Internet-Facing: HIGH - If exposed to the internet, attackers can easily exploit this without authentication.
🏢 Internal Only: HIGH - Even internally, any user with network access to the service can exploit this vulnerability.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Hardcoded credentials make exploitation trivial once discovered. No authentication required to access the baked-in credentials.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check SAP Note 3666261 for specific patched versions

Vendor Advisory: https://me.sap.com/notes/3666261

Restart Required: Yes

Instructions:

1. Review SAP Note 3666261 for affected versions. 2. Apply the security patch from SAP Security Patch Day. 3. Restart the SQL Anywhere Monitor service. 4. Verify the patch is applied successfully.

🔧 Temporary Workarounds

Network Isolation

all

Restrict network access to SQL Anywhere Monitor to only trusted administrative networks

Use firewall rules to block all external access to SQL Anywhere Monitor ports

Service Disablement

all

Temporarily disable SQL Anywhere Monitor if not essential

systemctl stop sqlanywhere-monitor (Linux)
sc stop "SQL Anywhere Monitor" (Windows)

🧯 If You Can't Patch

  • Immediately isolate the SQL Anywhere Monitor from all untrusted networks
  • Implement strict network access controls and monitor all connections to the service

🔍 How to Verify

Check if Vulnerable:

Check if SQL Anywhere Monitor (Non-GUI) is running and compare version against SAP Note 3666261

Check Version:

Check SQL Anywhere Monitor version through service configuration or installation logs

Verify Fix Applied:

Verify the patched version is installed and test that hardcoded credentials no longer work

📡 Detection & Monitoring

Log Indicators:

  • Unauthenticated access attempts to SQL Anywhere Monitor
  • Unusual administrative activity from unexpected sources

Network Indicators:

  • Connections to SQL Anywhere Monitor ports from unauthorized IPs
  • Traffic patterns indicating credential brute-forcing

SIEM Query:

source="sqlanywhere-monitor.log" AND (event="authentication_failure" OR event="unauthorized_access")

🔗 References

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