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CVE-2026-9403— Edimax BR-6675nD POST Request formWlSiteSurvey buffer overflow

Quick assessment

Affected
Edimax BR-6675nD
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-6675nD是中国讯舟（Edimax）公司的一款双频宽带无线路由器。 Edimax BR-6675nD 1.12版本存在安全漏洞，该漏洞源于POST Request Handler组件中/goform/formWlSiteSurvey文件的formWlSiteSurvey函数对参数selSSID操作不当，可能导致缓冲区溢出，攻击者可远程发起攻击。

CVSS 8.8 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Edimax BR-6675nD 1.12 affected
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I. Basic Information for CVE-2026-9403

Vulnerability Information
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Vulnerability Title
Edimax BR-6675nD POST Request formWlSiteSurvey buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Edimax BR-6675nD 1.12. The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler. This manipulation of the argument selSSID causes buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. 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-6675nD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Edimax BR-6675nD是中国讯舟（Edimax）公司的一款双频宽带无线路由器。 Edimax BR-6675nD 1.12版本存在安全漏洞，该漏洞源于POST Request Handler组件中/goform/formWlSiteSurvey文件的formWlSiteSurvey函数对参数selSSID操作不当，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-6675nD 1.12 cpe:2.3:a:edimax:br-6675nd:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9403

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III. Intelligence Information for CVE-2026-9403

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Other References for CVE-2026-9403 (1)

Same Patch Batch · Edimax · 2026-05-24 · 20 CVEs total

CVE-2026-9401 8.8 HIGH Edimax BR-6675nD POST Request formWanTcpipSetup buffer overflow
CVE-2026-9344 8.8 HIGH Edimax EW-7438RPn webs formWpsStart stack-based overflow
CVE-2026-9345 8.8 HIGH Edimax EW-7438RPn webs formWizSurvey buffer overflow
CVE-2026-9346 8.8 HIGH Edimax EW-7438RPn webs formWirelessTbl buffer overflow
CVE-2026-9348 8.8 HIGH Edimax EW-7438RPn webs mp stack-based overflow
CVE-2026-9360 8.8 HIGH Edimax EW-7438RPn POST Request formwlencrypt24g buffer overflow
CVE-2026-9380 8.8 HIGH Edimax BR-6675nD POST Request formL2TPSetup buffer overflow
CVE-2026-9381 8.8 HIGH Edimax BR-6675nD POST Request formPPPoESetup buffer overflow
CVE-2026-9382 8.8 HIGH Edimax BR-6675nD POST Request formPPTPSetup buffer overflow
CVE-2026-9399 8.8 HIGH Edimax BR-6675nD POST Request formsetPPPoE buffer overflow
CVE-2026-9379 6.3 MEDIUM Edimax BR-6675nD POST Request formWpsStart command injection
CVE-2026-9378 6.3 MEDIUM Edimax BR-6675nD POST Request formHwSet command injection
CVE-2026-9363 6.3 MEDIUM Edimax EW-7438RPn POST Request formEZCHNwlanSetu formEZCHNwlanSetup command injection
CVE-2026-9362 6.3 MEDIUM Edimax EW-7438RPn Setting formConnectionSetting command injection
CVE-2026-9361 6.3 MEDIUM Edimax EW-7438RPn POST Request formAccep formAccept command injection
CVE-2026-9359 6.3 MEDIUM Edimax EW-7438RPn POST Request formHwSet command injection
CVE-2026-9347 6.3 MEDIUM Edimax EW-7438RPn webs formWizSurvey os command injection
CVE-2026-9400 6.3 MEDIUM Edimax BR-6675nD POST Request formUSBStorage command injection
CVE-2026-9402 6.3 MEDIUM Edimax BR-6675nD POST Request formWlanMP command injection

IV. Related Vulnerabilities

Same product: BR-6675nD
Same vendor: Edimax
Same weakness: CWE-120

V. Comments for CVE-2026-9403

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