# CVE-2026-108894: Linksys E1700 OS command injection in static route handler

Source: https://junglewise.ai/threats/cve-2026-108894-a-security-flaw-has-been-discovered-in-linksys-e1700-1-0-0-4-003  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-108894 · Severity: critical · CVSS 9.9 · Published 2026-10-12

The Linksys E1700 router's static route configuration feature allows unauthenticated remote attackers to inject arbitrary operating system commands by manipulating route parameters. An attacker can exploit this to execute commands with root privileges, gain remote shell access, and take full control of the device and the home network it protects.

Technologies: [Linksys E1700](https://junglewise.ai/threats/technologies/e1700). Vendors: [Linksys](https://junglewise.ai/threats/vendors/linksys).

## Quick answers

**Is CVE-2026-108894 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-108894 being exploited in the wild.

**How severe is CVE-2026-108894?** Critical severity, with a CVSS score of 9.9, published 12 October 2026.

**Which products and versions are affected?** Linksys E1700 1.0.0.4.003.

**Is there a fix for CVE-2026-108894?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-108894 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-108894?** Check whether you run Linksys E1700 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The addStaticRoute function in the Static Route Handler component (/goform/addStaticRoute) fails to validate or sanitize user-supplied parameters (staticRoute_IP_setting, staticRoute_Netmask_setting, staticRoute_Gateway_setting, staticRoute_Metric_setting) before passing them to OS command execution. An unauthenticated remote attacker over the network can craft a POST request with shell metacharacters to execute arbitrary commands. The vulnerability allows complete device compromise and network access.

## Affected products

- Linksys E1700 1.0.0.4.003

## Timeline

- 2026-10-12: disclosed: Public exploit released

## References

- [https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_68/68.md](https://github.com/wudipjq/my_vuln/blob/main/Linksys3/vuln_68/68.md)
- [https://vuldb.com/cve/CVE-2026-108894](https://vuldb.com/cve/CVE-2026-108894)

## Related threats

- [Linksys E1700 OS command injection in IPv6 configuration](https://junglewise.ai/threats/cve-2026-108896-a-vulnerability-was-found-in-linksys-e1700-1-0-0-4-003-this)
- [Linksys E1700 OS command injection in DMZ function](https://junglewise.ai/threats/cve-2026-108895-a-weakness-has-been-identified-in-linksys-e1700-1-0-0-4-003-the)
- [Linksys E1700 stack buffer overflow in setVlan](https://junglewise.ai/threats/cve-2026-108893-a-vulnerability-was-identified-in-linksys-e1700-up-to-1-0-0-4)
- [Linksys E1700 stack buffer overflow in MAC filter](https://junglewise.ai/threats/cve-2026-108892-a-vulnerability-was-determined-in-linksys-e1700-1-0-0-4-003-this)