# CVE-2021-45382: D-Link Multiple Routers Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2021-45382-d-link-multiple-routers-remote-code-execution-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-04-04. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-45382 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-04-04

A remote command execution vulnerability exists in multiple D-Link router models via the DDNS function in the ncc2 binary file. The flaw allows an unauthenticated attacker to execute arbitrary commands over the network. Affected devices have reached End of Life (EOL) and will not receive security patches.

Technologies: [TP-Link Multiple Routers](https://junglewise.ai/threats/technologies/multiple-routers). Vendors: [TP-Link](https://junglewise.ai/threats/vendors/tp-link).

## Quick answers

**Is CVE-2021-45382 exploited in the wild?** Yes. CVE-2021-45382 is known to be exploited in the wild, first recorded on 4 April 2022. Treat it as urgent.

**How severe is CVE-2021-45382?** Critical severity, with a CVSS score of 9.8, published 4 April 2022.

**Which products and versions are affected?** D-Link DIR-810L All hardware revisions; End of Life; D-Link DIR-820L/LW All hardware revisions; End of Life; D-Link DIR-826L All hardware revisions; End of Life; D-Link DIR-830L All hardware revisions; End of Life; and 1 more.

**Is there a fix for CVE-2021-45382?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2021-45382 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2021-45382?** Check whether you run TP-Link Multiple Routers. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- D-Link DIR-810L All hardware revisions; End of Life
- D-Link DIR-820L/LW All hardware revisions; End of Life
- D-Link DIR-826L All hardware revisions; End of Life
- D-Link DIR-830L All hardware revisions; End of Life
- D-Link DIR-836L All hardware revisions; End of Life

## Timeline

- 2022-02-17: disclosed: NVD Published Date
- 2022-04-04: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-04-04: advisory: Publication date of the advisory provided.

## Related threats

- [TP-Link Archer C7 and TL-WR841N OS command injection in Parental Control](https://junglewise.ai/threats/cve-2025-9377-tp-link-archer-c7-and-tl-wr841n-os-command-injection-in-parental)
- [TP-Link Multiple Routers command injection in WlanNetworkRpm](https://junglewise.ai/threats/cve-2023-33538-tp-link-multiple-routers-command-injection-in-wlannetworkrpm)
- [D-Link Multiple Routers OS Command Injection Vulnerability](https://junglewise.ai/threats/cve-2018-6530-d-link-multiple-routers-os-command-injection-vulnerability)
- [D-Link Multiple Routers Command Injection Vulnerability](https://junglewise.ai/threats/cve-2019-16920-d-link-multiple-routers-command-injection-vulnerability)
- [NETGEAR Multiple Routers Remote Code Execution Vulnerability](https://junglewise.ai/threats/cve-2016-6277-netgear-multiple-routers-remote-code-execution-vulnerability)