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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.066 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.066 · newest: 0.066 · change: 0.000
Affected products
- Dlink Dir-846 — versions a1
- Dlink Dir-846 Firmware — versions 100a43, 100a53dla
Weakness classification (CWE)
References
- www.dlink.com/en/security-bulletin/ (Vendor Advisory)
- github.com/doudoudedi/DIR-846_Command_Injection/blob/main/DIR-846_Command_Injec… (Exploit, Third Party Advisory)
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.