CVE-2025-11242
📋 TL;DR
This Server-Side Request Forgery (SSRF) vulnerability in Teknolist Okulistik allows attackers to make unauthorized requests from the vulnerable server to internal or external systems. It affects all Okulistik versions through October 21, 2025, potentially exposing sensitive internal services and data.
💻 Affected Systems
- Teknolist Okulistik
⚠️ 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 access internal services, exfiltrate sensitive data, perform port scanning of internal networks, or chain with other vulnerabilities to achieve remote code execution.
Likely Case
Unauthorized access to internal APIs, metadata services, or cloud instance metadata leading to credential theft and lateral movement.
If Mitigated
Limited to information disclosure about internal network structure with no critical data exposure.
🎯 Exploit Status
SSRF vulnerabilities typically have low exploitation complexity and can be exploited with simple HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-26-0048
Restart Required: No
Instructions:
No official patch available. Monitor vendor channels for updates and apply immediately when released.
🔧 Temporary Workarounds
Network Segmentation
allRestrict outbound network access from Okulistik servers to only necessary external services
Input Validation
allImplement strict validation and sanitization of all user-supplied URLs and hostnames
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block SSRF patterns and suspicious outbound requests
- Monitor and alert on unusual outbound connections from Okulistik servers to internal or external systems
🔍 How to Verify
Check if Vulnerable:
Check Okulistik version against affected range. Test with controlled SSRF payloads to internal services if authorized.Check Version:
Check application interface or configuration files for version informationVerify Fix Applied:
Verify version is newer than 21102025. Test SSRF payloads to confirm they are blocked or properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Okulistik server
- Requests to internal IP addresses or metadata services
- Multiple failed connection attempts to various ports
Network Indicators:
- Outbound connections from Okulistik server to unexpected internal services
- Requests to cloud metadata endpoints (169.254.169.254, etc.)
- Port scanning patterns from single source
SIEM Query:
source_ip=okulistik_server AND (dest_ip IN internal_range OR dest_port_changes > 5)