CVE-2021-46456

Name: CVE-2021-46456
Creator: NVD / NIST
Published: 2022-02-04T02:15:09.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.06%

Last modified Jun 17, 2026

CVE-2021-46456 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. D-Link device D-Link DIR-823-Pro v1.0.2 was discovered to contain a command injection vulnerability in the function SetWLanACLSettings. This vulnerability allows attackers to execute arbitrary commands via the wl(0).(0)_maclist parameter.. EPSS estimates a 4.06% chance of exploitation in the next 30 days.

Description

D-Link device D-Link DIR-823-Pro v1.0.2 was discovered to contain a command injection vulnerability in the function SetWLanACLSettings. This vulnerability allows attackers to execute arbitrary commands via the wl(0).(0)_maclist parameter.

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

4.06%

89.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Dlink	Dir-823 Pro Firmware	<= 1.0.2

References

https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_26/26.mdBroken Link
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10285Vendor Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_26/26.mdBroken Link
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10285Vendor Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46456?

How severe is CVE-2021-46456?

CVE-2021-46456 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.06% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46456?

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-2021-46456?

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

Scan your code now

Source: NVD / NIST