Free5GC udr

• CVE-2026-40343 Medium 6.9 free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation 8.6%
• CVE-2026-27643 Medium 6.6 free5GC has improper error handling in NEF with information exposure 0.3%
• CVE-2025-69253 Medium 6.6 free5GC vulnerable to improper error handling in NEF with information exposure 0.4%
• CVE-2025-69208 Low 2.7 free5GC UDR's NEF incorrectly returns 500 for missing PFD data (UDR 404) in Nnef_PfdManagement GET request 0.3%