Stack-based Buffer Overflow in Tenda G0 Router Web Management Interface
CVE-2026-19791

8.7HIGH

Key Information:

Vendor

Tenda
Status
G0
Vendor
CVE Published:
14 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-19791?

A vulnerability has been discovered in the Tenda G0 router related to its web management interface. Specifically, the function addStaticRoute in the /goform/module file has a flaw that allows for a stack-based buffer overflow. By manipulating the argument staticRouteNet, an attacker can execute a remote exploit. This weakness could potentially lead to unauthorized access or control over the affected device, emphasizing the need for timely updates and security practices to mitigate risks associated with this flaw.

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-2026-19791 - Proof of Concept

References

https://vuldb.com/vuln/389759
vdb-entrytechnical-description
https://vuldb.com/vuln/389759/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19791
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)
.