CVE-2026-9443
published 2026-05-25CVE-2026-9443: A security vulnerability has been detected in Edimax BR-6478AC 1.23. This vulnerability affects the function formL2TPSetup of the file /goform/formL2TPSetup of…
PriorityP266high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.59%
43.7th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| edimax | br-6478ac | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.4HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
cvelistv5v4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
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GHSA
GHSA-349r-6q9h-2pfh: A security vulnerability has been detected in Edimax BR-6478AC 1
ghsa_unreviewed·2026-05-26
CVE-2026-9443 [HIGH] CWE-119 GHSA-349r-6q9h-2pfh: A security vulnerability has been detected in Edimax BR-6478AC 1
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.
CVEList
Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
cvelistv5·2026-05-25·CVSS 8.7
CVE-2026-9443 [HIGH] CWE-120 Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
Edimax BR-6478AC POST Request formL2TPSetup buffer overflow
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.
Timeline: 2026-05-24: Advisory disclosed; 2026-05-24: VulDB entry created; 2026-05-24: VulDB entry last update
VulDB
Edimax BR-6478AC 1.23 POST Request /goform/formL2TPSetup L2TPUserName buffer overflow
vuldb·2026-05-24
CVE-2026-9443 [CRITICAL] Edimax BR-6478AC 1.23 POST Request /goform/formL2TPSetup L2TPUserName buffer overflow
A vulnerability identified as critical 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.
This vulnerability is listed as CVE-2026-9443. The attack may be initiated remotely. In addition, an exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-25
Published