CVE-2026-51846
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
In Tenda AC7 firmware version 15.03.06.44, a stack buffer overflow vulnerability exists in the wanSpeed parameter of the /goform/AdvSetMacMtuWan route. This can lead to remote arbitrary code execution.
Risk Assessment
An attacker can remotely take control of the router, compromising network confidentiality and integrity, and potentially intercepting traffic.
Recommendation
Immediately update the Tenda AC7 firmware to the latest available version that fixes this vulnerability. If no update is available, restrict management interface access to trusted networks only.
Other vulnerabilities in Tenda AC7
See all- CVE-2026-51845Critical
A stack buffer overflow vulnerability was discovered in the Tenda AC7 router firmware version 15.03.06.44 in the /goform/AdvSetMacMtuWan interface via the mac parameter. An attacker can remotely crash the device or potentially execute arbitrary code.
- CVE-2026-51844Critical
A stack buffer overflow vulnerability was discovered in the Tenda AC7 router firmware version 15.03.06.44 in the /goform/AdvSetMacMtuWan interface via the cloneType parameter. An attacker can exploit this flaw to execute arbitrary code remotely or cause a denial of service.
- CVE-2026-51843Critical
A stack buffer overflow vulnerability exists in Tenda AC7 firmware version 15.03.06.44 in the /goform/AdvSetMacMtuWan interface via the wanMTU parameter. An attacker can remotely crash the device or potentially execute arbitrary code.
- CVE-2025-11523Medium
A vulnerability was detected in Tenda AC7 15.03.06.44. This vulnerability affects unknown code of the file /goform/AdvSetLanip. The manipulation of the argument lanIp results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.
Original NVD description (English source)
In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS