High severity · published May 25, 2026
CVE-2026-9442
Edimax BR-6478AC POST Request formiNICSiteSurvey buffer overflow
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
A weakness has been identified in Edimax BR-6478AC 1.23. This affects the function formiNICSiteSurvey of the file /goform/formiNICSiteSurvey of the component POST Request Handler. Executing a manipulation of the argument selSSID can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. 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)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
BR-6478AC · Edimax
1.23 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9442
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9442
lavender-bicycle-a5a.notion.site
https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formiNICSiteSurvey-34b53a41781f8083b8dff46a2f02978f?source=copy_link
vuldb.com
https://vuldb.com/submit/818451
vuldb.com
https://vuldb.com/vuln/365423
vuldb.com
https://vuldb.com/vuln/365423/cti
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