CVE-2026-4182

D-Link DIR-816 goahead form2Wl5RepeaterStep2.cgi stack-based overflow

CVSS 9.3 CRITICALEPSS 1.1%CWE-119 CWE-121

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.3EPSS 1.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

15 Mar 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

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

Affected products

D-Link · DIR-816

public PoCs found — 1

cve_referencegithub.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_86/86.mdunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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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/