CVE-2026-44317

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" enabling traffic-routing feature negotiation and whose medComponents...

CVE-2026-44315

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a...

CVE-2026-42082

Free5GC AMF prior to v4.2.2 is vulnerable to missing concurrent NAS SMC validation during NGAP handover. The vulnerability arises because the AMF does not enforce the cross-procedure rules in 3GPP TS 33.501 §6.9.5.1, allowing a NAS Security Mode Command (SMC) to be issued while an N2 handover pro...

CVE-2026-42083

CVE-2026-42083 affects free5GC PCF Npcf_SMPolicyControl where missing router authorization middleware in the smPolicyGroup allowed unauthenticated access to SM policy endpoints (e.g., POST /npcf-smpolicycontrol/v1/sm-policies, GET /sm-policies/{id}, POST /sm-policies/{id}/update, POST /sm-policie...

CVE-2026-42083 free5GC: PCF Npcf_SMPolicyControl missing authentication middleware allows unauthenticated access to SM policy handlers and disclosure of subscriber SUPI

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, PCF NpcfSMPolicyControl missing authentication middleware allows unauthenticated access to SM policy handlers and disclosure of subscriber SUPI. In NewServer, the smPolicyGroup route group is created and routes are...

CVE-2026-44315

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a...

EUVD-2026-32553

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a...

CVE-2026-44316

The CVE describes a nil-pointer dereference in free5GC PCF (POST /npcf-smpolicycontrol/v1/sm-policies) HandleCreateSmPolicyRequest. When a downstream OpenAPI (UDR) lookup returns 404 and the wrapper returns err != nil with a nil response, the code logs the error but does not return, then derefere...

CVE-2026-44317 free5GC: PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" enabling traffic-routing feature negotiation and whose medComponents...

EUVD-2026-32579

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications, the notifier calls NnefPFDmanagementNotify... and on any delivery error...

CVE-2026-44319 free5GC: NEF crashes via logger.Fatal on PFD notification delivery failure (attacker-controlled notifyUri)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications, the notifier calls NnefPFDmanagementNotify... and on any delivery error...

CVE-2026-44322 free5GC: NEF 3gpp-pfd-management PATCH applications/{appId} panics on UDR access failure due to nil ProblemDetails dereference

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/afId/transactions/transId/applications/appId handler panics with a nil-pointer dereference when the upstream UDR call fails AND the consumer wrapper returns err != nil...

CVE-2026-44322

The CVE-2026-44322 family describes a nil-pointer dereference panic in free5GC NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} that occurs when upstream UDR calls fail and the consumer wrapper returns err != nil with a nil *ProblemDetails. In the errPfdData br...

CVE-2026-44323

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/ueId/servingPlmnId/ee-subscriptions/subsId/amf-subscriptions handler contains a nil-pointer dereference reachable from a single authenticated request, after one...

CVE-2026-44323 free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exists (nil pointer dereference)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/ueId/servingPlmnId/ee-subscriptions/subsId/amf-subscriptions handler contains a nil-pointer dereference reachable from a single authenticated request, after one...

CVE-2026-44324 free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing UE state via nil interface type assertion (single authenticated request)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/ueId/servingPlmnId/ee-subscriptions/subsId/amf-subscriptions handler panics on a single authenticated request against a fresh UDR instance when the supplied ueId does n...

CVE-2026-44325

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/apiaccesstoken.go reflects over models.NrfAccessTokenAccessTokenReq,...

CVE-2026-44326

CVE-2026-44326 affects free5gc NEF 3gpp-traffic-influence API. Prior to version 4.2.2, the NEF mounts the 3gpp-traffic-influence endpoint without inbound OAuth2/bearer-token authorization. An unauthenticated or forged-token request reachable on the SBI can create, read, patch, and delete traffic-...

CVE-2026-44328

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarded...

CVE-2026-44330

Summary (CVE-2026-44330): free5GC NEF’s nnef-pfdmanagement route group was found to be mounted without inbound OAuth2/bearer-token authorization, exposing read and write access to PFD data and subscriptions. Affected: free5GC v4.2.1 (NEF). Impact: an attacker who can reach the NEF SBI can read PF...