CVE-2026-4566: high-severity vulnerability in Belkin F9K1122
Belkin F9K1122 formWISP5G stack-based overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.7%
A flaw has been found in Belkin F9K1122 1.00.33. The affected element is the function formWISP5G of the file /goform/formWISP5G. Executing a manipulation of the argument webpage can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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
Affected products
Belkin · F9K1122Related CVEs — Belkin F9K1122
In the same product, most dangerous first.
CVE-2025-7083MEDIUMBelkin F9K1122 webs mp os command injectionEPSS 47.1%CVE-2025-7081MEDIUMBelkin F9K1122 webs formSetWanStatic os command injectionEPSS 20.4%CVE-2025-7082MEDIUMBelkin F9K1122 webs formBSSetSitesurvey os command injectionEPSS 17.5%CVE-2025-7088HIGHBelkin F9K1122 webs formPPPoESetup stack-based overflowEPSS 14.1%CVE-2025-7087HIGHBelkin F9K1122 webs formL2TPSetup stack-based overflowEPSS 13.7%CVE-2025-7091HIGHBelkin F9K1122 webs formWlanMP stack-based overflowEPSS 7.9%