What is CVE-2021-46319?

CVE-2021-46319 is a critical-severity vulnerability in Dlink Dir-846, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-02-17.

How severe is CVE-2021-46319?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Dlink Dir-846

CVE-2021-46319

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.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.066 (93.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Dlink Dir-846 — versions a1
Dlink Dir-846_firmware — versions 100a43, 100a53dla
N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-46319?: CVE-2021-46319 is a critical-severity vulnerability in Dlink Dir-846, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-02-17.
How severe is CVE-2021-46319?: Critical severity. CVSS v3 base score is 9.8 out of 10.