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CVE-2026-6989— Tenda F453 Telnet Service telnet TendaTelnet command injection

Quick assessment

Affected
Tenda F453
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tenda F453是中国腾达（Tenda）公司的一款无线路由器。 Tenda F453 1.0.0.3及之前版本存在注入漏洞，该漏洞源于组件Telnet Service中文件/goform/telnet的函数TendaTelnet，可能导致命令注入。

CVSS 6.3 · Medium EPSS 6.33% · P93

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-6989

Vulnerability Information
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Vulnerability Title
Tenda F453 Telnet Service telnet TendaTelnet command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in Tenda F453 up to 1.0.0.3. Impacted is the function TendaTelnet of the file /goform/telnet of the component Telnet Service. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public 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:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda F453 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda F453是中国腾达（Tenda）公司的一款无线路由器。 Tenda F453 1.0.0.3及之前版本存在注入漏洞，该漏洞源于组件Telnet Service中文件/goform/telnet的函数TendaTelnet，可能导致命令注入。
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

Vendor Product Affected Versions CPE Subscribe
Tenda F453 1.0.0.0 cpe:2.3:o:tenda:f453_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6989

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III. Intelligence Information for CVE-2026-6989

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Proof of Concept for CVE-2026-6989 (1)

IV. Related Vulnerabilities

Same product: F453
Same vendor: Tenda
Same weakness: CWE-77

V. Comments for CVE-2026-6989

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