CVE-2026-44321

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. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into...

CVE-2026-44321 free5GC: SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable Fatalf)

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. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into...

GO-2026-4995 free5GC's SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers in github.com/free5gc/smf

free5GC's SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers in github.com/free5gc/smf...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization via the handling of PDUSessionResourceSetupResponse messages carrying AMF-UE-NGAP-ID. An attacker can redirect downlink user-plane traffic for any targeted UE to their own radio by sending a forged message with a...

CVE-2026-8187 Open5GS UPF gtp-path.c _gtpv1_u_recv_cb resource consumption

A flaw has been found in Open5GS up to 2.7.7. This impacts the function gtpv1urecvcb of the file src/upf/gtp-path.c of the component UPF. Executing a manipulation can lead to resource consumption. The attack may be performed from remote. The project was informed of the problem early through an...

PT-2026-39332

Name of the Vulnerable Software and Affected Versions Open5GS versions prior to 2.7.8 Description A flaw in the User Plane Function UPF component allows a remote attacker to cause resource consumption. This issue occurs within the gtpv1 u recv cb function located in the src/upf/gtp-path.c file...

Open5GS 资源管理错误漏洞

Open5GS is an open-source implementation of 5G Core and EPC in C language, which serves as the core network for LTE/NR networks. Versions of Open5GS 2.7.7 and earlier contain a resource management vulnerability. This vulnerability stems from operations performed by the gtpv1urecvcb function in th...

free5GC's SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers

Summary free5GC's SMF mounts the UPI management route group without OAuth2/bearer-token authorization middleware. A network attacker who can reach SMF on the SBI can hit UPI endpoints with no Authorization header at all, and the requests reach the SMF business handlers. In the running Docker lab...

GHSA-3258-QMV8-FRP3 free5GC's SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers

Summary free5GC's SMF mounts the UPI management route group without OAuth2/bearer-token authorization middleware. A network attacker who can reach SMF on the SBI can hit UPI endpoints with no Authorization header at all, and the requests reach the SMF business handlers. In the running Docker lab...

GHSA-P9MG-74MG-CWWR free5GC's SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating

Summary free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware same root cause as the broader UPI auth gap reported in free5gc/free5gc887. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarde...

PT-2026-39258

Name of the Vulnerable Software and Affected Versions free5GC SMF version 4.2.1 Description The SMF mounts the UPI management route group without inbound OAuth2 middleware, allowing unauthenticated access. A flaw in the DeleteUpNodeLink function causes a nil-pointer dereference when processing...

CVE-2026-26024

free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP UDP/8805 interface. No known upstrea...

CVE-2025-69232

free5GC is an open-source project for 5th generation 5G mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote...

CVE-2025-69247

free5GC go-upf is the User Plane Function UPF implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow CWE-122 vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially...

CVE-2025-69247

The CVE-2025-69247 entry concerns the free5GC go-upf UPF component. Versions prior to 1.2.8 are affected by a Heap-based Buffer Overflow (CWE-122) triggered by a PFCP Session Modification Request with an invalid SDF Filter length field, causing denial of service and potential cascading SMF impact...

CVE-2025-69247 free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service

free5GC go-upf is the User Plane Function UPF implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow CWE-122 vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially...

CVE-2025-69247 free5GC has Heap Buffer Overflow in UPF Leading to Denial of Service

free5GC go-upf is the User Plane Function UPF implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow CWE-122 vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially...

CVE-2025-69232 free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption

free5GC is an open-source project for 5th generation 5G mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote...

CVE-2025-69232 free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption

free5GC is an open-source project for 5th generation 5G mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote...

CVE-2025-69232 free5GC hasProtocol Compliance Violation in UPF Leading to SMF Service Disruption

free5GC is an open-source project for 5th generation 5G mobile core networks. free5GC go-upf versions up to and including 1.2.6, corresponding to free5gc smf up to and including 1.4.0, have an Improper Input Validation and Protocol Compliance vulnerability leading to Denial of Service. Remote...