Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-45382

Severity CVSS v4.0:
Pending analysis
Type:
CWE-78 OS Command Injections
Publication date:
17/02/2022
Last modified:
10/11/2025

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 10.00 HIGH
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
10.00
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:dlink:dir-820l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-820l:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-820lw_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-820lw:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-826l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-826l:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-830l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-830l:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-836l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-836l:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-810l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-810l:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools