High severity · published Jun 21, 2026
CVE-2026-12806
Edimax BR-6478AC V2 POST Request formWlSiteSurvey buffer overflow
8.8
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BV
BR-6478AC V2 · Edimax
1.23 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12806
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12806
lavender-bicycle-a5a.notion.site
https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formWlSiteSurvey-34b53a41781f80669c10df409a0851d4?source=copy_link
vuldb.com
https://vuldb.com/cve/CVE-2026-12806
vuldb.com
https://vuldb.com/submit/836668
vuldb.com
https://vuldb.com/vuln/372600
vuldb.com
https://vuldb.com/vuln/372600/cti
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