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CVE-2026-5043

HIGH CVSS 4.0: 7.4 EPSS 0.09%
Updated Mar 30, 2026
Belkin
Parameter Value
CVSS 7.4 (HIGH)
Type CWE-787 (Out-of-bounds Write), CWE-119 (Buffer Overflow), CWE-121 (Stack-based Buffer Overflow)
Vendor Belkin
Public PoC No

A weakness has been identified in Belkin F9K1122 1.00.33. The impacted element is the function formSetPassword of the file /goform/formSetPassword of the component Parameter Handler. This manipulation of the argument webpage causes stack-based buffer overflow.

Remote exploitation of the attack is possible. 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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Belkin F9k1122_Firmware
cpe:2.3:o:belkin:f9k1122_firmware:1.00.33:*:*:*:*:*:*:*
Belkin F9k1122
cpe:2.3:h:belkin:f9k1122:-:*:*:*:*:*:*:*