24429mp4 〈INSTANT - WALKTHROUGH〉

Typically rated as high, as it impacts the availability of core mobile network functions. Technical Breakdown

Open5GS versions up to and including 2.6.4 24429mp4

Implement network-level filtering to ensure that NGAP traffic is only accepted from trusted, authorized network nodes (GNBs/Access Points). Typically rated as high, as it impacts the

Ensure Open5GS is updated to a version newer than 2.6.4 (such as version 2.7.0 or later), where this assertion logic has been hardened. An attacker can trigger this crash by sending

An attacker can trigger this crash by sending a specially crafted NGAP packet (Next Generation Application Protocol) to the system.

The vulnerability stems from a "reachable assertion" within the nas_eps_send_emm_to_esm function. In software development, an assertion is a check that the code assumes to be true; if it fails, the program usually crashes immediately to prevent further errors.