CVE-2026-9443— Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
Possible ATT&CK Techniques 2AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationGet alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-9443
Vulnerability Information
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Vulnerability Title
Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A security vulnerability has been detected in Edimax BR-6478AC 1.23. This vulnerability affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. The manipulation of the argument L2TPUserName leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-9443
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Other References for CVE-2026-9443 (1)
Same Patch Batch · Edimax · 2026-05-25 · 15 CVEs total
| CVE-2026-9425 | 8.8 HIGH | Edimax EW-7438RPn formWlanMP stack-based overflow |
| CVE-2026-9426 | 8.8 HIGH | Edimax EW-7438RPn formHwSet stack-based overflow |
| CVE-2026-9427 | 8.8 HIGH | Edimax EW-7438RPn webs formWlSiteSurvey stack-based overflow |
| CVE-2026-9442 | 8.8 HIGH | Edimax BR-6478AC POST Request formiNICSiteSurvey buffer overflow |
| CVE-2026-9460 | 8.8 HIGH | Edimax EW-7438RPn formAccept stack-based overflow |
| CVE-2026-9461 | 8.8 HIGH | Edimax EW-7438RPn formRadius stack-based overflow |
| CVE-2026-9459 | 8.8 HIGH | Edimax EW-7438RPn formConnectionSetting stack-based overflow |
| CVE-2026-9463 | 8.8 HIGH | Edimax EW-7438RPn formLicence stack-based overflow |
| CVE-2026-9462 | 8.8 HIGH | Edimax EW-7438RPn formWpsProxyEnable stack-based overflow |
| CVE-2026-9424 | 6.3 MEDIUM | Edimax EW-7438RPn Content-Type formWlanMP os command injection |
| CVE-2026-9439 | 6.3 MEDIUM | Edimax BR-6675nD stainfo command injection |
| CVE-2026-9440 | 6.3 MEDIUM | Edimax BR-6478AC POST Request formAccept command injection |
| CVE-2026-9441 | 6.3 MEDIUM | Edimax BR-6478AC POST Request formiNICbasic command injection |
| CVE-2026-9423 | 4.7 MEDIUM | Edimax BR-6675nD POST Request mp command injection |
IV. Related Vulnerabilities
Same vendor: Edimax
- CVE-2026-9463
Edimax EW-7438RPn formLicence stack-based overflow - CVE-2026-9462
Edimax EW-7438RPn formWpsProxyEnable stack-based overflow - CVE-2026-9461
Edimax EW-7438RPn formRadius stack-based overflow - CVE-2026-9460
Edimax EW-7438RPn formAccept stack-based overflow - CVE-2026-9459
Edimax EW-7438RPn formConnectionSetting stack-based overflow
Same weakness: CWE-120
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V. Comments for CVE-2026-9443
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