CVE-2021-46319

Name: CVE-2021-46319
Creator: NVD / NIST
Published: 2022-02-17T22:15:07.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.16%

Last modified Jun 17, 2026

CVE-2021-46319 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Remote Code Execution (RCE) vulnerability exists in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin. Malicious users can use this vulnerability to use "\ " or backticks to bypass the shell metacharacters in the ssid0 or ssid1 parameters to execute arbitrary commands.This vulnerability is due to the fact that CVE-2019-17509 is not fully patched and can be bypassed by using line breaks or backticks on its basis.. EPSS estimates a 6.16% chance of exploitation in the next 30 days.

Description

Remote Code Execution (RCE) vulnerability exists in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin. Malicious users can use this vulnerability to use "\ " or backticks to bypass the shell metacharacters in the ssid0 or ssid1 parameters to execute arbitrary commands.This vulnerability is due to the fact that CVE-2019-17509 is not fully patched and can be bypassed by using line breaks or backticks on its basis.

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

6.16%

92.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Dlink	Dir-846 Firmware	100a43
Dlink	Dir-846 Firmware	100a53dla

References

https://github.com/doudoudedi/DIR-846_Command_Injection/blob/main/DIR-846_Command_Injection1.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/doudoudedi/DIR-846_Command_Injection/blob/main/DIR-846_Command_Injection1.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-46319?

How severe is CVE-2021-46319?

CVE-2021-46319 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46319?

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-2021-46319?

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

Scan your code now

Source: NVD / NIST