CVE-2021-42784

Name: CVE-2021-42784
Creator: NVD / NIST
Published: 2021-11-23T22:15:08.083+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 7.13%

Last modified Jun 17, 2026

CVE-2021-42784 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. OS Command Injection vulnerability in debug_fcgi of D-Link DWR-932C E1 firmware allows a remote attacker to perform command injection via a crafted HTTP request.. EPSS estimates a 7.13% chance of exploitation in the next 30 days.

Description

OS Command Injection vulnerability in debug_fcgi of D-Link DWR-932C E1 firmware allows a remote attacker to perform command injection via a crafted HTTP request.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

7.13%

93.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dlink	Dwr-932c E1 Firmware	<= 1.0.0.4

References

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10246Patch, Vendor Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10246Patch, Vendor Advisory

Timeline

Published: Nov 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42784?

OS Command Injection vulnerability in debug_fcgi of D-Link DWR-932C E1 firmware allows a remote attacker to perform command injection via a crafted HTTP request.

How severe is CVE-2021-42784?

CVE-2021-42784 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.13% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42784?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-42784?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST