Edimax BR-6478AC 1.23 POST Request /goform/formAccept submit-url command injection

Summaryinfo

A vulnerability was found in Edimax BR-6478AC 1.23. It has been rated as critical. Affected by this issue is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Performing a manipulation of the argument submit-url results in command injection. This vulnerability is identified as CVE-2026-9440. The attack can be initiated remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, was found in Edimax BR-6478AC 1.23. This affects the function formAccept of the file /goform/formAccept of the component POST Request Handler. The manipulation of the argument submit-url with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. 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. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at lavender-bicycle-a5a.notion.site. This vulnerability is uniquely identified as CVE-2026-9440. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

The exploit is shared for download at lavender-bicycle-a5a.notion.site. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-31651). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Edimax

Name

• BR-6478AC

Version

• 1.23

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #818449: Edimax BR6478ACV2 BR6478ACV2_v1.23 Command Injection (by wxhwxhwxh_mie)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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