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An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash.
Reserved 2025-03-11 | Published 2025-04-22 | Updated 2025-04-23 | Assigner mitregithub.com/open5gs/open5gs/issues/3727
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