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    CVE-2026-4566

    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.

    Published:Mar 23, 2026
    Last Modified:Apr 29, 2026
    EPS:Mar 23, 2026
    EPSS Score:0.00056
    CVSS Score:8.8

    Affected Products

    Vendor
    Belkin
    Product
    F9k1122
    Vendor
    Belkin
    Product
    F9k1122 Firmware

    Exploits

    https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.mdhttps://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md#proof-of-concept-poc

    Related CVEs

    CVE-2026-5608 (CVSS 7.4) — A vulnerability was detected in Belkin F9K1122 1.00.33. Affected is the function formWlanSetup of the file /go…
    CVE-2026-5044 (CVSS 7.4) — A security vulnerability has been detected in Belkin F9K1122 1.00.33. This affects the function formSetSystemS…
    CVE-2026-5043 (CVSS 7.4) — A weakness has been identified in Belkin F9K1122 1.00.33. The impacted element is the function formSetPassword…
    CVE-2026-5042 (CVSS 7.4) — A security flaw has been discovered in Belkin F9K1122 1.00.33. The affected element is the function formCrossB…
    CVE-2026-4167 (CVSS 7.4) — A vulnerability was determined in Belkin F9K1122 1.00.33. This affects the function formReboot of the file /go…
    CVE-2025-7094 (CVSS 7.4) — A vulnerability was found in Belkin F9K1122 1.00.33. It has been rated as critical. Affected by this issue is …
    CVE-2025-7093 (CVSS 7.4) — A vulnerability was found in Belkin F9K1122 1.00.33. It has been declared as critical. Affected by this vulner…
    CVE-2025-7092 (CVSS 7.4) — A vulnerability has been found in Belkin F9K1122 1.00.33 and classified as critical. This vulnerability affect…
    CVE-2025-7091 (CVSS 7.4) — A vulnerability was found in Belkin F9K1122 1.00.33. It has been classified as critical. Affected is the funct…
    CVE-2025-7090 (CVSS 7.4) — A vulnerability, which was classified as critical, has been found in Belkin F9K1122 1.00.33. Affected by this …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High