CVE-2021-45382

A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link DIR-810L...

9.8 CriticalIn KEV

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

97.8%Up 93.9 points since Feb 18, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2021-45382
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

CVE List 9.8

Record: CVE-2021-45382
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2021-32155 9.8

Record: EUVD-2021-32155
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5wgx-qvpv-2353 9.8

A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link DIR-810L...

Record: GHSA-5wgx-qvpv-2353
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-77, CWE-78
Updated: 2026-11-02

CISA KEV No score

D-Link Multiple Routers Remote Code Execution Vulnerability

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

Record: CVE-2021-45382
Weakness: CWE-78
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	D-Link - Remote Command Execution

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-45382 is a critical vulnerability (CVSS 9.8) in D-link Multiple Routers, published February 17, 2022. CISA lists it as known to be exploited, since April 4, 2022. EUVD reports exploitation since April 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 97.8%, the 99th percentile. No source names a fixed version.