Command Injection Vulnerability in Tenda F453 Router by Tenda
CVE-2026-6989

5.3MEDIUM

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
25 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6989?

A command injection vulnerability has been detected in the Tenda F453 router, specifically impacting the TendaTelnet function within the Telnet Service. This flaw allows an attacker to execute arbitrary commands remotely through the /goform/telnet endpoint, leading to potential unauthorized access and manipulation of the device. Given that the exploit has been publicly disclosed, it is critical for users to apply necessary patches and secure their devices to prevent exploitation of this vulnerability.

Affected Version(s)

F453 1.0.0.0

F453 1.0.0.1

F453 1.0.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6989 - Proof of Concept

References

https://vuldb.com/vuln/359541
vdb-entrytechnical-description
https://vuldb.com/vuln/359541/cti
signaturepermissions-required
https://vuldb.com/submit/796560
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

alc9700 (VulDB User)
.