EUVD-2026-17249
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4Description
A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function fromAdvSetWan of the file /goform/AdvSetWan of the component Parameter Handler. The manipulation of the argument wanmode results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.
Analysis
Stack-based buffer overflow in Tenda CH22 router (version 1.0.0.1) allows authenticated remote attackers to achieve code execution or denial of service via the wanmode parameter in the /goform/AdvSetWan endpoint. Public exploit code exists (GitHub POC), significantly lowering exploitation barriers. …
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Remediation
Within 24 hours: Inventory all Tenda CH22 routers (version 1.0.0.1) in production and document their network locations and current credentials. Within 7 days: Restrict administrative access to the affected routers via network segmentation or firewall rules limiting /goform/AdvSetWan endpoint access to trusted administrator IPs only; enforce strong, unique credentials on all devices. …
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External POC / Exploit Code
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