CVE-2025-9090 - CVE House
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Status published Medium CVE-2025-9090

Tenda AC20 Telnet Service telnet websFormDefine command injection

Vulnerability Description

A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • n0ps1ed (VulDB User)

References

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Affected Vendor

Affected Software

AC20
Vulnerable Versions:
16.03.08.12

Timeline

Official Publish: August 17th, 2025
Last Modified: August 18th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Weaknesses (CWE)

CWE-77 CWE-74

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1105 Ingress Tool Transfer
Command and Control
T1562 Impair Defenses
Defense Evasion
T1213 Data from Information Repositories
Collection