OS Command Injection Vulnerability in Totolink N300RH by Totolink
CVE-2026-6158

6.9MEDIUM

Key Information:

Vendor

Totolink
Status
N300rh
Vendor
CVE Published:
13 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6158?

A vulnerability exists in the Totolink N300RH wireless router, specifically within the function setUpgradeUboot in the upgrade.so file. An attacker can manipulate the FileName argument, which leads to os command injection. This issue can be exploited remotely, allowing unauthorized access and the execution of commands on the device. The exploit has been publicly disclosed, highlighting the urgent need for users to secure their devices against potential attacks.

Affected Version(s)

N300RH 6.1c.1353_B20190305

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-2026-6158 - Proof of Concept

References

https://vuldb.com/vuln/357038
vdb-entrytechnical-description
https://vuldb.com/vuln/357038/cti
signaturepermissions-required
https://vuldb.com/submit/796426
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

xuanyu (VulDB User)
.