Stack-based Buffer Overflow in Tenda CH22 by Tenda
CVE-2026-5605

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5605?

A vulnerability has been discovered in the Tenda CH22 router, specifically in the function 'formWrlExtraSet' found within the '/goform/WrlExtraSet' file. This flaw is triggered by improper handling of the argument 'GO', resulting in a stack-based buffer overflow. This security issue allows an attacker to execute remote commands, potentially leading to unauthorized access to the device. Given that exploit details are publicly available, immediate attention to this vulnerability is essential for users of the affected version.

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Affected Version(s)

CH22 1.0.0.1

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-2026-5605 - Proof of Concept

References

https://vuldb.com/vuln/355397
vdb-entrytechnical-description
https://vuldb.com/vuln/355397/cti
signaturepermissions-required
https://vuldb.com/submit/785052
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

LtzHuster (VulDB User)
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