CVE-2026-9440: edimax br-6478ac_firmware Injection

Vulnerability summary

CVE-2026-9440 is a medium (CVSS 6.5) Injection vulnerability in edimax br-6478ac_firmware. EPSS estimates a 2.38% chance of exploitation in the next 30 days, higher than 83.7% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 25-05-2026
   PublishedVulnerability first disclosed.
2. 28-05-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability was identified in Edimax BR-6478AC 1.23. Affected by this vulnerability is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Such manipulation of the argument submit-url leads to command injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.