Executive brief
The Tenda HG10 router's web-based administration interface contains a buffer overflow vulnerability in its IPv6 routing configuration function. An attacker can send a specially crafted request over the network to cause the device to crash or potentially execute arbitrary code, disrupting network connectivity and potentially compromising the router entirely.
Technical details
A buffer overflow vulnerability exists in the Boa web server's formIPv6Routing function (entry address 0x004648CC) within the Tenda HG10 router. The vulnerable code uses strcpy() to copy the user-supplied destNet HTTP parameter into a fixed-size buffer without length validation. An attacker can submit an overlong destNet value via a POST request to /boaform/admin/formIPv6Routing to overflow the buffer and overwrite adjacent memory. The attack is remotely exploitable without authentication or user interaction, and exploitation has been confirmed to cause denial-of-service; arbitrary code execution may be possible depending on memory layout and runtime protections. Public exploit code is available.
Affected products
- Tenda HG10 300001138 (AC1200)
Timeline
- 2026-08-30: disclosed: CVE-2026-82542 published