Free5GC code-related vulnerabilities

free5GC is an open-source project for the 5th generation 5G mobile core network. Versions of free5GC prior to 4.2.2 contained code vulnerabilities. These vulnerabilities stemmed from the NEF patch handler’s inability to handle UDR calls properly, leading to null pointer dereferencing and...

free5GC security vulnerabilities

free5GC is an open-source project for the 5th generation 5G mobile core network. Versions of free5GC prior to 4.2.2 contained security vulnerabilities. These vulnerabilities stemmed from the PCF’s HandleCreateSmPolicyRequest handler, which encountered a null pointer dereferencing when UDR returne...

Information Disclosure

Free5GC is vulnerable to Information Disclosure. The vulnerability is due to improper request handling in the UDR endpoint GET /nudr-dr/v2/application-data/influenceData/subs-to-notify, where error responses for missing or malformed parameters do not terminate execution. As a result, processing...

GHSA-JQFC-GWJ5-3W63 free5GC's UDR nudr-dr DELETE amf-subscriptions panics on missing UE state via nil interface type assertion (single authenticated request)

Summary 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 not exist in UESubsCollection. The processor checks value, ok :=...

GHSA-4RQF-GRM6-VF75 free5GC's UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exists (nil pointer dereference)

Summary 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 preparatory authenticated EE-subscription create. The handler checks , ok =...

free5GC's UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exists (nil pointer dereference)

Summary 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 preparatory authenticated EE-subscription create. The handler checks , ok =...

free5GC's PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereference

Summary free5GC's PCF POST /npcf-smpolicycontrol/v1/sm-policies handler HandleCreateSmPolicyRequest panics with a nil-pointer dereference when a downstream OpenAPI consumer call UDR lookup returns 404 Not Found and the consumer wrapper returns err != nil together with a nil response struct. The...

PT-2026-39254

Name of the Vulnerable Software and Affected Versions free5GC versions prior to 4.2.2 Description The UDR nudr-dr handler in free5GC contains an issue where a single authenticated request can cause a panic. This occurs when a request is made to the endpoint "DELETE...

PT-2026-39253

Name of the Vulnerable Software and Affected Versions free5GC versions prior to 4.2.2 Description The UDR nudr-dr handler for the endpoint "DELETE /subscription-data/ueId/servingPlmnId/ee-subscriptions/subsId/amf-subscriptions" contains a nil-pointer dereference. This occurs when a request is mad...

Open5GS security vulnerabilities

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 security vulnerabilities. These vulnerabilities stem from issues with the authentication-subscription endpoint in the...

CVE-2026-7708

A vulnerability was determined in Open5GS up to 2.7.7. The affected element is the function ogsdbisubscriptiondata in the library /lib/dbi/subscription.c of the component UDR. This manipulation of the argument supiid causes denial of service. The attack may be initiated remotely. The exploit has...

CVE-2026-7707 Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service

A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udrnudrdrhandlesubscriptioncontext of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made...

CVE-2026-7707 Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service

A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udrnudrdrhandlesubscriptioncontext of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made...

CVE-2026-7707

Open5GS up to 2.7.7 is affected by a DoS in the UDR component. The vulnerability resides in the function udr_nudr_dr_handle_subscription_context (file /src/udr/nudr-handler.c); manipulating the argument pei triggers denial of service. Exploit has been made public and can be used remotely. The pro...

Open5GS security vulnerabilities

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 security vulnerabilities. These vulnerabilities stem from the operation of the ogsdbisubscriptiondata function in the...

CVE-2026-40343

free5GC UDR is the user data repository UDR for free5GC, an an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the /nudr-dr/v2/policy-data/subs-to-notify POST handler to continue...

CVE-2026-40343 free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation

free5GC UDR is the user data repository UDR for free5GC, an an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the /nudr-dr/v2/policy-data/subs-to-notify POST handler to continue...

CVE-2026-40343 free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation

free5GC UDR is the user data repository UDR for free5GC, an an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the /nudr-dr/v2/policy-data/subs-to-notify POST handler to continue...

CVE-2026-40343

free5GC UDR is the user data repository UDR for free5GC, an an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the /nudr-dr/v2/policy-data/subs-to-notify POST handler to continue...

CVE-2026-40343 free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation

free5GC UDR is the user data repository UDR for free5GC, an an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the /nudr-dr/v2/policy-data/subs-to-notify POST handler to continue...