CVE-2021-45382

CRITICAL9.8

CISA KEV

Published 2022-02-17 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2021-45382 is a critical-severity (CVSS 9.8) vulnerability in D-Link Multiple Routers. CISA added it to the Known Exploited Vulnerabilities catalog on April 4, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 25, 2022. CISA does not currently list it as used in ransomware campaigns. D-Link has 26 vulnerabilities in the KEV catalog, 2 of them linked to ransomware.

All 26 known-exploited D-Link vulnerabilities →

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 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-78CWE-78

CISA Known-Exploited Vulnerability

Product: D-Link — Multiple Routers

Name: D-Link Multiple Routers Remote Code Execution Vulnerability

Date added: 2022-04-04 · Due: 2022-04-25

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

References

View on NVD

More exploited D-Link vulnerabilities

Most recently added to CISA KEV

CVE-2025-29635
DIR-823X — D-Link DIR-823X Command Injection Vulnerability
added 2026-04-24
CVE-2022-37055
Routers — D-Link Routers Buffer Overflow Vulnerability
added 2025-12-08
CVE-2020-25078
DCS-2530L and DCS-2670L Devices — D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability
added 2025-08-05
CVE-2020-25079
DCS-2530L and DCS-2670L Devices — D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability
added 2025-08-05
CVE-2022-40799
DNR-322L — D-Link DNR-322L Download of Code Without Integrity Check Vulnerability
added 2025-08-05
CVE-2024-0769
DIR-859 Router — D-Link DIR-859 Router Path Traversal Vulnerability
added 2025-06-25

View all →

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