CVE-2026-4182: D-Link DIR-816 goahead form2Wl5RepeaterStep2.cgi stack-based overflow

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-16 · updated 2026-06-17
Weakness: CWE-119

Description

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.

Affected products

D-Link DIR-816: 1.10cnb05

References

https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_86/86.md
https://vuldb.com/?ctiid.351086
https://vuldb.com/?id.351086
https://vuldb.com/?submit.769830
https://www.dlink.com/

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