CVE-2026-4182CWE-119CWE-121

D-Link DIR-816 goahead form2Wl5RepeaterStep2.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 weakness has been identified in D-Link DIR-816 1.10CNB05. This impacts an unknown function of the file /goform/form2Wl5RepeaterStep2.cgi of the component goahead. This manipulation of the argument key1/key2/key3/key4/pskValue causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could 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 form2Wl5RepeaterStep2.cgi stack-based overflow
    cvelistv5