CVE-2021-33274

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_80040af8 in /formWlanSetup. This vulnerability is triggered via a crafted POST request.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln07Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln07Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Dec 1, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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