CVE-2025-65559: OPEN5GS

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Open5GS 2.7.5-49-g465e90f, when processing a PFCP Session Establishment Request (type=50), the UPF crashes with a reachable assertion in `lib/pfcp/context.c` (`ogs_pfcp_object_teid_hash_set`) if the CreatePDR?PDI?F-TEID has CH=1 and the F-TEID address-family flag(s) (IPv4/IPv6) do not match the GTP-U resource family configured for the selected DNN (Network Instance), resulting in a denial of service.

Affected products

• OPEN5GS OPEN5GS: version 2.7.5 only

Published 2025-12-18. Last modified 2026-06-17.