CVE-2026-5042

Name: CVE-2026-5042
Creator: NVD / NIST
Published: 2026-03-29T11:16:34.867+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2026-5042 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. 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. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.4/10

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.67%

47.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Belkin	F9k1122 Firmware	1.00.33

References

https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_153/README.mdExploit, Third Party Advisory
https://vuldb.com/submit/779123Third Party Advisory, VDB Entry
https://vuldb.com/vuln/353965Third Party Advisory, VDB Entry
https://vuldb.com/vuln/353965/ctiPermissions Required, VDB Entry

Timeline

Published: Mar 29, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5042?

How severe is CVE-2026-5042?

CVE-2026-5042 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5042?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5042?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST