OS Command Injection in Linksys WAG200G Router by Cisco
CVE-2013-20007

8.6HIGH

Key Information:

Vendor

Linksys

Status
Vendor
CVE Published:
28 October 2026

What is CVE-2013-20007?

The Linksys WAG200G router is affected by an OS command injection vulnerability that permits authenticated attackers to execute arbitrary commands. By injecting backtick-delimited input through the timer_interval parameter in a crafted POST request to setup.cgi, attackers can initiate telnetd or enable backdoor functionality. This grants them complete control over the device, posing significant security risks to networks reliant on this hardware.

Affected Version(s)

WAG200G 0 <= 1.01.06

References

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Michael Messner
.