Buffer overflow in D-link Dir-816
CVE-2026-4183
A security vulnerability has been detected in D-Link DIR-816 1.10CNB05. Affected is an unknown function of the file /goform/form2WlanBasicSetup.cgi of the component goahead. Such manipulation of the argument pskValue leads to stack-based b…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (52.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.
Affected products
- D-link Dir-816 — versions 1.10CNB05
Weakness classification (CWE)
References
- VDB-351087 | D-Link DIR-816 goahead form2WlanBasicSetup.cgi stack-based overflow (vdb-entry, technical-description)
- VDB-351087 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #769831 | D-Link DIR816 1.10CNB05 Stack-based Buffer Overflow (third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_87/87.md (exploit)
- www.dlink.com/ (product)
Frequently asked questions
- What is CVE-2026-4183?
- CVE-2026-4183 is a critical-severity vulnerability in D-link Dir-816, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-03-15.
- How severe is CVE-2026-4183?
- Critical severity. CVSS v3 base score is 9.8 out of 10.