TI-2013-06224 Aliases CVE-2013-20007 GHSA-c6xm-fp38-v723

OS command injection in Linksys WAG200G setup.cgi

HIGH 72CWE-78Published 2026-10-28 · Updated 2026-11-05

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Linksys WAG200G through 1.01.06 contains an OS command injection flaw (CWE-78) in the timer_interval parameter of setup.cgi. The device passes backtick-delimited input from this parameter to the operating system without neutralizing it. An authenticated attacker can send a crafted POST request to run commands, start telnetd or install a backdoor, gaining full control of the device. The references include a public exploit.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.02004 80th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linksys	WAG200G	up to 1.01.06	—	No fix listed	CNA

WAG200G VendorLinksys Affected up to 1.01.06 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Linksys WAG200G.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

2026-10-28 Threatist record created from CVE-2013-20007
2026-10-28 Alias added: GHSA-c6xm-fp38-v723
2026-11-05 CISA SSVC decision points changed
2026-11-05 Priority changed: MEDIUM → HIGH

References

Exploit 1

ExploitDB-24476: Linksys WAG200G Multiple Vulnerabilities

Advisory 1

s3cur1ty Advisory m1adv2013-016: Linksys WAG200G Multiple Vulnerabilities

TI-2025-24206 Linksys Routers E/WAG/WAP/WES/WET/WRT-Series CVSS 4.0CRITICAL 10.0
TI-2017-12715 OS command injection in Linksys WVBR0 CVSS 3.0CRITICAL 9.8
TI-2026-70977 Stack-based buffer overflow in Linksys E1700 Mac Filter CVSS 4.0CRITICAL 10.0
TI-2026-22199 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22198 Missing neutralization in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8
TI-2026-22197 Missing authentication in Linksys MR9600, Linksys MX4200 CVSS 3.1CRITICAL 9.8

See all 253 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences