CVE-2021-43474

Name: CVE-2021-43474
Creator: NVD / NIST
Published: 2022-04-07T22:15:07.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.08%

Last modified Jun 17, 2026

CVE-2021-43474 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An Access Control vulnerability exists in D-Link DIR-823G REVA1 1.02B05 (Lastest) via any parameter in the HNAP1 function. EPSS estimates a 3.08% chance of exploitation in the next 30 days.

Description

An Access Control vulnerability exists in D-Link DIR-823G REVA1 1.02B05 (Lastest) via any parameter in the HNAP1 function

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

3.08%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Dlink	Dir-823g Firmware	1.02b05

References

https://github.com/sek1th/iot/blob/master/dir-823g_all.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/sek1th/iot/blob/master/dir-823g_all.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Apr 7, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43474?

An Access Control vulnerability exists in D-Link DIR-823G REVA1 1.02B05 (Lastest) via any parameter in the HNAP1 function

How severe is CVE-2021-43474?

CVE-2021-43474 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.08% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43474?

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-2021-43474?

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

Scan your code now

Source: NVD / NIST