CVE-2026-2886
Plain English Summary
AI-powered analysis for quick understanding
An attacker can remotely exploit a flaw in the Tenda A21 router's firmware to overwrite memory by sending a specially crafted device name, which could lead to unauthorized access or control of the device. This vulnerability is serious because it can be easily triggered without needing physical access to the router.
Technical Description
A weakness has been identified in Tenda A21 1.0.0.0. This affects the function set_device_name of the file /goform/SetOnlineDevName. This manipulation of the argument devName causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
CVSS Vector Analysis
Vector String
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:XExploit Resources
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Official References
Quick Information
Published
Feb 21, 2026
about 2 months ago
Last Modified
Feb 23, 2026
about 1 month ago
Vendor
tenda
Product
a21 firmware
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