CVE-2026-4181 CRITICAL

CVE-2026-4181: D-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow

Vendor D-Link
Product DIR-816
Weakness CWE-121
Published March 15, 2026
Last update March 16, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A security flaw has been discovered in D-Link DIR-816 1.10CNB05. This affects an unknown function of the file /goform/form2RepeaterStep2.cgi of the component goahead. The manipulation of the argument key1/key2/key3/key4/pskValue 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. This vulnerability only affects products that are no longer supported by the maintainer.

Key dates

02Disclosure timeline

March 15, 2026 CVE published
March 16, 2026 Record updated