CVE-2026-5042CWE-119CWE-121

Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow

High · published March 29, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
64.2
In the wild
Unconfirmed
What it is

A security flaw has been discovered in Belkin F9K1122 1.00.33. The affected element is the function formCrossBandSwitch of the file /goform/formCrossBandSwitch of the component Parameter Handler. The manipulation of the argument webpage results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.01058 · 64.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-03-29T10:30Z
EPSS history
Timeline
  • 29 MAR 10:30Z
    Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow
    cvelistv5