CVE-2021-45382
D-Link Multiple Routers Remote Code Execution Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 25 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link DIR-810L, DIR-820L/LW, DIR-826L, DIR-830L, and DIR-836L routers via the DDNS function in ncc2 binary file. Note: DIR-810L, DIR-820L, DIR-830L, DIR-826L, DIR-836L, all hardware revisions, have reached their End of Life ("EOL") /End of Service Life ("EOS") Life-Cycle and as such this issue will not be patched.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 97.84% probability · 100th percentile
- CISA KEV
- Listed 4 April 2022 · due 25 April 2022
- Weakness
- CWE-78
- Affected
- dlink/dir-820l firmware · dlink/dir-820lw firmware · dlink/dir-826l firmware · dlink/dir-830l firmware · dlink/dir-836l firmware · dlink/dir-810l firmware
- Source
- cve@mitre.org
CISA notes
The impacted product is end-of-life and should be disconnected if still in use. https://nvd.nist.gov/vuln/detail/CVE-2021-45382
References
- https://github.com/doudoudedi/D-LINK_Command_Injection1/blob/main/D-LINK_Command_injection.mdExploit, Third Party Advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10264Vendor Advisory
- https://github.com/doudoudedi/D-LINK_Command_Injection1/blob/main/D-LINK_Command_injection.mdExploit, Third Party Advisory
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10264Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-45382US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.