CVE-2026-12806
Edimax BR-6478AC V2 POST Request formWlSiteSurvey buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 21, 2026
- Updated
- Jun 23, 2026
- Reserved
- Jun 21, 2026
Description
A vulnerability has been found in Edimax BR-6478AC V2 1.23. The impacted element is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey of the component POST Request Handler. The manipulation of the argument selSSID leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS: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 | VulDB |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
BR-6478AC V2Edimax |
|
References
- VDB-372600 | Edimax BR-6478AC V2 POST Request formWlSiteSurvey buffer overflowvdb-entrytechnical-description
- VDB-372600 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-12806 | CVE Analysis and Reportthird-party-advisory
- Submit #836668 | EDIMAX BR6478ACV2 BR6478ACV2_v1.23 Buffer Overflowthird-party-advisory
- https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formWlSiteSurvey-34b53a41781f80669c10df409a0851d4?source=copy_linkexploit
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