CVE-2026-2203— Tenda AC8 Embedded Httpd Service fast_setting_wifi_set buffer overflow
Quick assessment
Affected
Tenda AC8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Tenda AC8是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC8 16.03.33.05版本存在安全漏洞，该漏洞源于对组件Embedded Httpd Service中文件/goform/fast_setting_wifi_set参数timeZone的错误操作，可能导致缓冲区溢出。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2203
Vulnerability Information
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Vulnerability Title
Tenda AC8 Embedded Httpd Service fast_setting_wifi_set buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Tenda AC8 16.03.33.05. Affected by this vulnerability is an unknown functionality of the file /goform/fast_setting_wifi_set of the component Embedded Httpd Service. This manipulation of the argument timeZone causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda AC8 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC8是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC8 16.03.33.05版本存在安全漏洞，该漏洞源于对组件Embedded Httpd Service中文件/goform/fast_setting_wifi_set参数timeZone的错误操作，可能导致缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-2203
| # | POC Description | Source Link | Shenlong Link |
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Proof of Concept for CVE-2026-2203 (1)
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V. Comments for CVE-2026-2203
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