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CVE-2026-9442— Edimax BR-6478AC POST Request formiNICSiteSurvey buffer overflow

Quick assessment

Affected
Edimax BR-6478AC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Edimax BR-6478AC是中国讯舟（Edimax）公司的一款双频千兆路由器。 Edimax BR-6478AC 1.23版本存在安全漏洞，该漏洞源于POST Request Handler组件/goform/formiNICSiteSurvey文件中函数formiNICSiteSurvey对参数selSSID的操作，可能导致缓冲区溢出。攻击者可远程发起攻击。

CVSS 8.8 · High EPSS 0.80% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Edimax BR-6478AC 1.23 affected
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I. Basic Information for CVE-2026-9442

Vulnerability Information
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Vulnerability Title
Edimax BR-6478AC POST Request formiNICSiteSurvey buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in Edimax BR-6478AC 1.23. This affects the function formiNICSiteSurvey of the file /goform/formiNICSiteSurvey of the component POST Request Handler. Executing a manipulation of the argument selSSID can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Edimax BR-6478AC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Edimax BR-6478AC是中国讯舟（Edimax）公司的一款双频千兆路由器。 Edimax BR-6478AC 1.23版本存在安全漏洞，该漏洞源于POST Request Handler组件/goform/formiNICSiteSurvey文件中函数formiNICSiteSurvey对参数selSSID的操作，可能导致缓冲区溢出。攻击者可远程发起攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Edimax BR-6478AC 1.23 cpe:2.3:o:edimax:br-6478ac_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9442

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III. Intelligence Information for CVE-2026-9442

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Same Patch Batch · Edimax · 2026-05-25 · 19 CVEs total

CVE-2026-9460 8.8 HIGH Edimax EW-7438RPn formAccept stack-based overflow
CVE-2026-9482 8.8 HIGH Edimax EW-7438RPn formSDHCP stack-based overflow
CVE-2026-9480 8.8 HIGH Edimax EW-7438RPn formrefresh stack-based overflow
CVE-2026-9481 8.8 HIGH Edimax EW-7438RPn formStats stack-based overflow
CVE-2026-9479 8.8 HIGH Edimax EW-7438RPn formLogout stack-based overflow
CVE-2026-9462 8.8 HIGH Edimax EW-7438RPn formWpsProxyEnable stack-based overflow
CVE-2026-9463 8.8 HIGH Edimax EW-7438RPn formLicence stack-based overflow
CVE-2026-9459 8.8 HIGH Edimax EW-7438RPn formConnectionSetting stack-based overflow
CVE-2026-9461 8.8 HIGH Edimax EW-7438RPn formRadius stack-based overflow
CVE-2026-9443 8.8 HIGH Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
CVE-2026-9427 8.8 HIGH Edimax EW-7438RPn webs formWlSiteSurvey stack-based overflow
CVE-2026-9426 8.8 HIGH Edimax EW-7438RPn formHwSet stack-based overflow
CVE-2026-9425 8.8 HIGH Edimax EW-7438RPn formWlanMP stack-based overflow
CVE-2026-9424 6.3 MEDIUM Edimax EW-7438RPn Content-Type formWlanMP os command injection
CVE-2026-9441 6.3 MEDIUM Edimax BR-6478AC POST Request formiNICbasic command injection
CVE-2026-9440 6.3 MEDIUM Edimax BR-6478AC POST Request formAccept command injection
CVE-2026-9439 6.3 MEDIUM Edimax BR-6675nD stainfo command injection
CVE-2026-9423 4.7 MEDIUM Edimax BR-6675nD POST Request mp command injection

IV. Related Vulnerabilities

Same product: BR-6478AC
Same vendor: Edimax
Same weakness: CWE-120

V. Comments for CVE-2026-9442

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