Stack-based Buffer Overflow in Tenda FH1201 by Tenda
CVE-2026-5046

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh1201
Vendor
CVE Published:
29 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5046?

A security flaw in the Tenda FH1201 router's Parameter Handler allows for a stack-based buffer overflow exploit through the formWrlExtraSet function in the /goform/WrlExtraSet file. This vulnerability can potentially be executed remotely, enabling an attacker to manipulate specific arguments, leading to potentially severe consequences. Proper safeguards and patching are critical to mitigate this risk.

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Affected Version(s)

FH1201 1.2.0.14(408)

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-2026-5046 - Proof of Concept

References

https://vuldb.com/vuln/353969
vdb-entrytechnical-description
https://vuldb.com/vuln/353969/cti
signaturepermissions-required
https://vuldb.com/submit/779127
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

LtzHuster2 (VulDB User)
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