CVE-2026-4181CWE-119CWE-121

D-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow

Critical · published March 15, 2026

CVSS v4.0
9.3
EPSS
2%
Percentile
80.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
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
EPSS
0.01951 · 80.1th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-03-15T16:02Z
EPSS history
Timeline
  • 15 MAR 16:02Z
    D-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow
    cvelistv5