Buffer Overflow Vulnerability in Tenda F453 Router
CVE-2026-3165

8.7HIGH

Key Information:

Vendor

Tenda
Status
F453
Vendor
CVE Published:
25 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3165?

A buffer overflow vulnerability exists in the Tenda F453 router's firmware version 1.0.0.3, specifically within the fromSetWifiGusetBasic function located in the /goform/AdvSetWrlsafeset component of httpd. This vulnerability can be exploited remotely by manipulating the mit_ssid argument, allowing an attacker to gain unauthorized access or execute arbitrary code. The exploit has been disclosed publicly, raising concerns for affected users and emphasizing the need for urgent security measures.

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Affected Version(s)

F453 1.0.0.3

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-2026-3165 - Proof of Concept

References

https://vuldb.com/?id.347672
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347672
signaturepermissions-required
https://vuldb.com/?submit.759587
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

LtzHust (VulDB User)
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