Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a UE Context Release Request message missing a required MME_UE_S1AP_ID field to repeatedly crash the MME, resulting in denial of service.
| Software | From | Fixed in |
|---|---|---|
| open5gs / open5gs | - | 2.6.4.x |