Impact
The flaw is a stack‑based buffer overflow in Tenda's web management interface, triggered when a crafted value is supplied for funckey_transfer in the asp_voip_OtherSet function. The overflow permits an attacker to corrupt the stack, potentially enabling arbitrary code execution with the privileges of the web service. This breach could compromise confidentiality, integrity, and availability of the device and any network it connects to.
Affected Systems
The affected devices are Tenda HG7HG9 and HG10 routers running firmware version 300001138_en_xpon. The vulnerability resides in the /boaform/voip_other_set endpoint of the web management component.
Risk and Exploitability
The CVSS score of 8.7 signals a high severity risk. EPSS is not available, but the vulnerability is exploitable remotely, suggesting that attackers could target the device over the network without needing local access. The vulnerability is not listed in CISA's KEV catalog, yet its high severity and remote nature mean organizations should treat it as a top priority.
OpenCVE Enrichment