CVE-2026-5020
Received Received - Intake
Remote Command Injection in Totolink A3600R Parameter Handler

Publication date: 2026-03-29

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was detected in Totolink A3600R 4.1.2cu.5182_B20201102. Affected by this issue is the function setNoticeCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. The manipulation of the argument NoticeUrl results in command injection. The attack may be launched remotely. The exploit is now public and may be used.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-03-29
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-03-29
EPSS Evaluated
2026-06-15
NVD
CVE-2026-5020
EUVD
EUVD-2026-16961
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
totolink a3600r_firmware 4.1.2cu.5182_b20201102
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in the Totolink A3600R router, specifically in the function setNoticeCfg within the file /cgi-bin/cstecgi.cgi, which is part of the Parameter Handler component.

The issue arises from improper handling of the NoticeUrl argument, which allows an attacker to perform command injection.

This means that an attacker can remotely send crafted input to this function to execute arbitrary commands on the device.

The exploit for this vulnerability is publicly available.

Impact Analysis

An attacker exploiting this vulnerability can remotely execute arbitrary commands on the affected Totolink A3600R device.

This can lead to unauthorized control over the device, potentially allowing the attacker to disrupt network operations, steal sensitive information, or use the device as a foothold for further attacks.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-5020. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart