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A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function smf_gn_handle_create_pdp_context_request of the file /src/smf/gn-handler.c of the component SMF. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVE-2026-2523 is a vulnerability identified in the Open5GS open-source 5G core network software, specifically affecting versions 2.7.0 through 2.7.6. The issue resides in the SMF (Session Management Function) component within the function smf_gn_handle_create_pdp_context_request located in /src/smf/gn-handler.c. This function processes requests related to PDP (Packet Data Protocol) context creation. The vulnerability manifests as a reachable assertion failure, which can be triggered remotely without requiring any authentication or user interaction. An assertion failure typically causes the program to abort or crash, leading to denial of service conditions. The vulnerability has a CVSS 4.0 base score of 6.9, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges or user interaction needed, making exploitation feasible in exposed environments. Although the exploit code has been publicly disclosed, there are no confirmed reports of active exploitation in the wild. The Open5GS project was notified early via an issue report but has not yet issued a patch or official response. This vulnerability threatens the stability and availability of the SMF component, a critical part of the 5G core network responsible for session management and policy enforcement. Given Open5GS's role in 5G infrastructure, successful exploitation could disrupt mobile network services relying on this software.

Detailed information about CVE-2026-2523: Reachable Assertion in Open5GS affecting null Open5GS. Get real-time updates, technical details, and mitigation strate

CVE-2026-2523: Reachable Assertion in Open5GS - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-2523: Reachable Assertion in Open5GS

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