CVE-2026-2872
Plain English Summary
AI-powered analysis for quick understanding
An attacker can remotely exploit a vulnerability in the Tenda A21 router to execute arbitrary code by manipulating the device name during MAC filtering configuration, potentially taking control of the device. This requires the attacker to send specially crafted data to the router, making it a serious risk for anyone using this firmware version.
Technical Description
A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.
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
Search for proof-of-concept code and exploit modules
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
Related Vulnerabilities
An attacker can remotely exploit a vulnerability in Tenda FH1202 routers to execute arbitrary code by sending specially crafted data to a specific function, which can lead to a crash or unauthorized control of the device. This attack requires no physical access and can be carried out over the internet, making it a significant risk for users with this firmware version.
This vulnerability allows an attacker to remotely take control of the Tenda FH1202 router by exploiting a flaw in its DHCP client list function, which can lead to a crash or unauthorized access to the device. The attacker needs to send specially crafted data to the router, making it possible for them to execute harmful code on the device.
An attacker can remotely exploit a flaw in the Tenda FH1202 router's firmware to execute arbitrary code by manipulating a specific setting, potentially taking control of the device. This vulnerability requires no special access, making it easy for attackers to target affected routers over the internet.
This vulnerability allows an attacker to remotely execute malicious code on the Tenda FH1202 router by exploiting a flaw in how the device handles certain input data. The attacker needs to manipulate a specific argument in the router's web interface, which could lead to unauthorized access or control of the device.
An attacker can remotely exploit a vulnerability in the Tenda FH1202 router to execute arbitrary code by sending specially crafted data that causes a buffer overflow, potentially taking control of the device. This attack can happen without needing physical access, making it a serious risk for users of this router firmware version.