CVE-2021-45382 : A Remote Command Execution (RCE) vulnerability exists in all series H/W revision

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.

Published 2022-02-17 21:15:08

Updated 2025-04-03 19:48:44

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-45382

Dlink » Dir-820l Firmware » Version: N/A
cpe:2.3:o:dlink:dir-820l_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-820l » Version: N/A
Dlink » Dir-820lw Firmware » Version: N/A
cpe:2.3:o:dlink:dir-820lw_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-820lw » Version: N/A
Dlink » Dir-826l Firmware » Version: N/A
cpe:2.3:o:dlink:dir-826l_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-826l » Version: N/A
Dlink » Dir-830l Firmware » Version: N/A
cpe:2.3:o:dlink:dir-830l_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-830l » Version: N/A
Dlink » Dir-836l Firmware » Version: N/A
cpe:2.3:o:dlink:dir-836l_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-836l » Version: N/A
Dlink » Dir-810l Firmware » Version: N/A
cpe:2.3:o:dlink:dir-810l_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-810l » Version: N/A

CVE-2021-45382 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

D-Link Multiple Routers Remote Code Execution Vulnerability

CISA required action:

The impacted product is end-of-life and should be disconnected if still in use.

CISA description:

A remote code execution vulnerability exists in all series H/W revisions routers via the DDNS function in ncc2 binary file.

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2021-45382

Added on 2022-04-04 Action due date 2022-04-25

Exploit prediction scoring system (EPSS) score for CVE-2021-45382

EPSS FAQ

93.10%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 100 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-45382

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
10.0	HIGH	AV:N/AC:L/Au:N/C:C/I:C/A:C	10.0	10.0	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-01-29
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-45382

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2021-45382

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10264

D-Link Technical Support
Vendor Advisory
https://github.com/doudoudedi/D-LINK_Command_Injection1/blob/main/D-LINK_Command_injection.md

D-LINK_Command_Injection1/D-LINK_Command_injection.md at main · doudoudedi/D-LINK_Command_Injection1 · GitHub
Exploit;Third Party Advisory