Huawei eCNS280_TD is a core network device for Huawei’s wireless broadband trunking system. Huawei ESE620X vESS is a virtual enterprise service controller from Huawei, China. Huawei eCNS280_TD and ESE620X vESS are vulnerable to an out-of-bounds read vulnerability. An attacker can exploit this vulnerability to cause a denial of service (DoS) by sending a specific message to the target device.