CRITICAL

CVE-2021-33269

CVSS v3

9.8

CRITICAL

EPSS Score

4.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-33269 yet.

Full record on NVD

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_8004776c in /formVirtualServ. This vulnerability is triggered via a crafted POST request.

Technical details

Published: 2021-12-01

Frequently asked questions

What is CVE-2021-33269?

Is CVE-2021-33269 actively exploited?

Active exploitation of CVE-2021-33269 has not been confirmed. Its EPSS score was 4.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-33269?

CVE-2021-33269 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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