Is CVE-2021-45382 actively exploited?

CVE-2021-45382 has no public evidence of in-the-wild exploitation as of 2025-11-10.

What is the CVSS score for CVE-2021-45382?

CVE-2021-45382 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-45382?

Patch guidance is available from dlink security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-45382.

Fix CVE-2021-45382 - CRITICAL dlink dir-820l firmware

Q: Which products are affected by CVE-2021-45382?

6 products: dlink dir-820l firmware, dlink dir-820lw firmware, dlink dir-826l firmware, dlink dir-830l firmware, dlink dir-836l firmware, and 1 more.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection CWE-78 · OS Command Injection

Metadata

Primary Vendor: DLINK
Published: 2/17/2022
Last Modified: 11/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

dlink : dir-820l_firmwaredlink : dir-820lw_firmwaredlink : dir-826l_firmwaredlink : dir-830l_firmwaredlink : dir-836l_firmwaredlink : dir-810l_firmware

Remediation Guidance

Executive Summary

View on NIST NVD