CVE-2026-12806 | THREATINT

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.

PUBLISHED Reserved 2026-06-21 | Published 2026-06-21 | Updated 2026-06-21 | Assigner VulDB

HIGH: 8.7CVSS: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

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Buffer Overflow

Memory Corruption

Product status

1.23

affected

Timeline

2026-06-21:	Advisory disclosed
2026-06-21:	VulDB entry created
2026-06-21:	VulDB entry last update

Credits

yhryhryhr_tu (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/372600 (VDB-372600 | Edimax BR-6478AC V2 POST Request formWlSiteSurvey buffer overflow) vdb-entry technical-description

vuldb.com/vuln/372600/cti (VDB-372600 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-12806 (CVE-2026-12806 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/836668 (Submit #836668 | EDIMAX BR6478ACV2 BR6478ACV2_v1.23 Buffer Overflow) third-party-advisory

lavender-bicycle-a5a.notion.site/...a0851d4?source=copy_link exploit

cve.org (CVE-2026-12806)

nvd.nist.gov (CVE-2026-12806)

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