# CVE-2026-88709: ASUS Router firmware command injection via USB device

Source: https://junglewise.ai/threats/cve-2026-88709-improper-neutralization-of-special-elements-used-in-an-os-command  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-88709 · Severity: info · Published 2026-11-10

ASUS routers contain a vulnerability that allows an attacker with physical access to insert a USB device with a specially crafted directory name to execute arbitrary commands with root privileges. This could enable complete compromise of the router, leading to network takeover, data interception, or use as a pivot point for attacking devices on the network.

Technologies: [ASUS Router Firmware](https://junglewise.ai/threats/technologies/router-firmware). Vendors: [ASUS](https://junglewise.ai/threats/vendors/asus).

## Quick answers

**Is CVE-2026-88709 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88709 being exploited in the wild.

**How severe is CVE-2026-88709?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** ASUS Router firmware.

**Is there a fix for CVE-2026-88709?** 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-2026-88709 attacked?** It is attacked with physical access, in device firmware.

**Am I affected by CVE-2026-88709?** Check whether you run ASUS Router Firmware. 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 vulnerability is an improper neutralization of special elements in an OS command, allowing command injection through a maliciously named directory on a USB device. The attack requires physical access to the router and interaction with USB insertion. Successful exploitation grants root-level command execution on the affected firmware.

## Affected products

- ASUS Router firmware

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.asus.com/security-advisory](https://www.asus.com/security-advisory)

## Related threats

- [ASUS Router firmware OS command injection](https://junglewise.ai/threats/cve-2026-88710-improper-neutralization-of-special-elements-used-in-an-os-command)
- [ASUS Router firmware off-by-one error in packet handling](https://junglewise.ai/threats/cve-2026-88708-an-off-by-one-error-in-certain-asus-router-firmware-allows-an)
- [ASUS Router firmware out-of-bounds write vulnerability](https://junglewise.ai/threats/cve-2026-88707-an-out-of-bounds-write-in-certain-asus-router-firmware-allows-an)
- [ASUS Router stack-based buffer overflow in AiCloud](https://junglewise.ai/threats/cve-2026-84730-stack-based-buffer-overflow-in-certain-asus-router-firmware)
- [ASUS Router firmware out-of-bounds write](https://junglewise.ai/threats/cve-2026-84729-out-of-bounds-write-in-certain-asus-router-firmware-allow-an)