CVE-2013-20007— Linksys WAG200G through 1.01.06 OS Command Injection via timer_interval in setup.cgi

Quick assessment

Affected

Linksys WAG200G

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linksys WAG200G 固件版本 1.01.06 及更早版本存在操作系统命令注入漏洞。该漏洞允许已认证的攻击者通过将反引号（backtick）分隔的输入注入到参数中，从而执行任意命令。攻击者可向发送特制的 POST 请求，以启动 telnetd 服务或下载并运行后门程序，进而获得对设备的完全控制权。

CVSS 7.2 · High Updated Oct 28, 2026

Possible ATT&CK Techniques 2 AI

T1059.004 · Unix Shell T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Linksys WAG200G through 1.01.06 OS Command Injection via timer_interval in setup.cgi

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

OS命令中使用的特殊元素转义处理不恰当(OS命令注入)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Linksys	WAG200G	0 ~ 1.01.06	-

II. Public POCs for CVE-2013-20007

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2013-20007

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Other References for CVE-2013-20007 (3)

https://www.exploit-db.com/exploits/24476 exploit
https://www.s3cur1ty.de/m1adv2013-016 third-party-advisory
https://www.vulncheck.com/advisories/linksys-wag200g-through-1.01.06-os-command-injection-via-timer-interval-in-setup-cgi third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2013-20007

Same Patch Batch · Linksys · 2026-10-28 · 3 CVEs total

CVE-2013-20008	6.8 MEDIUM	Linksys WAG200G through 1.01.06 Admin Password Change Without Current Password
CVE-2013-20009	4.8 MEDIUM	Linksys WAG200G through 1.01.06 Stored XSS via policy_name Parameter

IV. Related Vulnerabilities

Same product: WAG200G

Same vendor: Linksys

Same weakness: CWE-78