# CVE-2026-13561: Edimax EW-7478APC OS command injection in formiNICbasic

Source: https://junglewise.ai/threats/cve-2026-13561-edimax-ew-7478apc-os-command-injection-in-forminicbasic  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-29. Updated: 2026-06-29  
License: CC BY 4.0 with a link back

CVE-2026-13561 · Severity: medium · CVSS 6.3 · Published 2026-06-29

A security vulnerability exists in the Edimax EW-7478APC router that could allow an attacker to take control of the device. By sending a specially crafted web request, an unauthorized user can execute system-level commands. This could lead to a complete compromise of the router, allowing attackers to intercept network traffic or disrupt internet connectivity.

Technologies: [Edimax EW-7478APC](https://junglewise.ai/threats/technologies/ew-7478apc). Vendors: [Edimax](https://junglewise.ai/threats/vendors/edimax).

## Quick answers

**Is CVE-2026-13561 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-13561 being exploited in the wild.

**How severe is CVE-2026-13561?** Medium severity, with a CVSS score of 6.3, published 29 June 2026.

**Which products and versions are affected?** Edimax EW-7478APC 1.04.

**Is there a fix for CVE-2026-13561?** 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-2026-13561 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-13561?** Check whether you run Edimax EW-7478APC 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

An OS command injection vulnerability (CWE-78) exists in the Edimax EW-7478APC router, specifically within the 'formiNICbasic' function of the '/goform/formiNICbasic' endpoint. The vulnerability is triggered by improper neutralization of the 'rootAPmac' argument passed via a POST request. A remote attacker with low privileges can exploit this flaw to execute arbitrary operating system commands on the underlying device. As of the disclosure date, the vendor has not responded to reports, and public exploit code is reportedly available.

## Affected products

- Edimax EW-7478APC 1.04

## Timeline

- 2026-06-29: disclosed: Public disclosure of the vulnerability and exploit.
- 2026-06-29: advisory: CVE-2026-13561 published.

## References

- [https://lavender-bicycle-a5a.notion.site/EDIMAX-EW-7478APC-formiNICbasic-34b53a41781f8052bc69c85481124dff](https://lavender-bicycle-a5a.notion.site/EDIMAX-EW-7478APC-formiNICbasic-34b53a41781f8052bc69c85481124dff)
- [https://vuldb.com/cve/CVE-2026-13561](https://vuldb.com/cve/CVE-2026-13561)
- [https://vuldb.com/submit/844111](https://vuldb.com/submit/844111)
- [https://vuldb.com/vuln/374569](https://vuldb.com/vuln/374569)
- [https://vuldb.com/vuln/374569/cti](https://vuldb.com/vuln/374569/cti)

## Related threats

- [Edimax EW-7478APC command injection in stainfo](https://junglewise.ai/threats/cve-2026-19963-edimax-ew-7478apc-command-injection-in-stainfo)
- [Edimax EW-7478APC command injection in setWAN](https://junglewise.ai/threats/cve-2026-19962-edimax-ew-7478apc-command-injection-in-setwan)
- [Edimax EW-7478APC buffer overflow in wireless site survey](https://junglewise.ai/threats/cve-2026-19961-edimax-ew-7478apc-buffer-overflow-in-wireless-site-survey)
- [Edimax EW-7478APC command injection in formWlbasic](https://junglewise.ai/threats/cve-2026-19960-edimax-ew-7478apc-command-injection-in-formwlbasic)
- [Edimax EW-7478APC stack buffer overflow in WAN configuration](https://junglewise.ai/threats/cve-2026-19959-edimax-ew-7478apc-stack-buffer-overflow-in-wan-configuration)