CVE-2026-5611

A vulnerability was found in Belkin F9K1015 1.00.10. This affects the function formCrossBandSwitch of the file /goform/formCrossBandSwitch. Performing a manipulation of the argument webpage results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v4.0

7.4 HIGHCVSS: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

CVSS v3.1

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

CVSS v2.0

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

0.69% chance of exploitation in the next 30 days, 50th percentile

Published

2026-04-06

Updated

2026-04-07

Proof-of-concept exploits (1)

• Litengzheng/vuldb_new/blob/main/Belkin%20F9K1015/vul_5/README.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-56109
• CVE-2026-56111
• CVE-2026-56100
• CVE-2026-56115
• CVE-2026-5610
• CVE-2026-5612