---
id: CVE-2013-20007
title: >-
  Linksys WAG200G through 1.01.06 OS Command Injection via timer_interval in
  setup.cgi
summary: >-
  Linksys WAG200G through 1.01.06 contains an OS command injection vulnerability
  that allows authenticated attackers to execute commands by injecting
  backtick-delimited input into the timer_interval parameter. Attackers can send
  a crafted …
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-78
vendor: Linksys
product: WAG200G
affected:
  - WAG200G <= 1.01.06
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T02:03:10.353Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2013-20007'
references:
  - url: 'https://www.s3cur1ty.de/m1adv2013-016'
    label: 's3cur1ty Advisory m1adv2013-016: Linksys WAG200G Multiple Vulnerabilities'
  - url: 'https://www.exploit-db.com/exploits/24476'
    label: 'ExploitDB-24476: Linksys WAG200G Multiple Vulnerabilities'
  - url: >-
      https://www.vulncheck.com/advisories/linksys-wag200g-through-1.01.06-os-command-injection-via-timer-interval-in-setup-cgi
    label: >-
      VulnCheck Advisory: Linksys WAG200G through 1.01.06 OS Command Injection
      via timer_interval in setup.cgi
tags:
  - cve.org
ingestedAt: '2026-10-28T03:02:57.635Z'
---

## Overview

Linksys WAG200G through 1.01.06 contains an OS command injection vulnerability that allows authenticated attackers to execute commands by injecting backtick-delimited input into the timer_interval parameter. Attackers can send a crafted POST request to setup.cgi to start telnetd or download and run a backdoor, gaining full device control.

## Affected

- `WAG200G <= 1.01.06`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.