Stack-Based Buffer Overflow in Tenda G0 Web Management Interface
CVE-2026-19790

8.7HIGH

Key Information:

Vendor

Tenda
Status
G0
Vendor
CVE Published:
14 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19790?

A vulnerability exists in the Tenda G0's Web Management Interface, specifically within the function formSetPortMirror located in the /goform/module file. This issue arises from improper handling of the argument portMirrorMirroredPorts, leading to a stack-based buffer overflow. The vulnerability can be exploited remotely, allowing attackers to manipulate the system. Public exploits for this vulnerability are available, highlighting the urgent need for users to address this security flaw promptly.

Affected Version(s)

G0 20260625

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-2026-19790 - Proof of Concept

References

https://vuldb.com/vuln/389757
vdb-entrytechnical-description
https://vuldb.com/vuln/389757/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19790
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

stksgg (VulDB User)
.