CVE-2020-25079: D-Link Multiple Cameras command injection in ddns_enc.cgi

CVE-2020-25079 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2025-08-05

Multiple D-Link network cameras contain a security flaw that allows an attacker to take control of the device. These cameras are used for security monitoring, and an exploit could allow an unauthorized person to disrupt video feeds or use the camera as a foothold to attack other parts of the corporate network. Because many of these devices are reaching their end-of-life, users are advised to update their firmware or replace the hardware entirely.

Vendors: D-Link.

Quick answers

Is CVE-2020-25079 exploited in the wild?
Yes. CVE-2020-25079 is known to be exploited in the wild, first recorded on 5 August 2025. Treat it as urgent.
How severe is CVE-2020-25079?
Critical severity, with a CVSS score of 8.8, published 5 August 2025.
Which products and versions are affected?
D-Link Japan DCS-2530L Firmware before 1.06.01 Hotfix; D-Link Japan DCS-2670L Firmware up to 2.02; D-Link Japan DCS-4603 Firmware before 1.04.02; D-Link Japan DCS-4622 Firmware before 2.01.10; and 4 more.
Is there a fix for CVE-2020-25079?
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-2020-25079 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2020-25079?
Check whether you run D-Link DCS-2530L, D-Link DCS-2670L, D-Link DCS-2670L Devices or one of the others listed at an affected version. 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.

Technical details

A command injection vulnerability exists in the 'cgi-bin/ddns_enc.cgi' endpoint of several D-Link camera models. The flaw is caused by improper neutralization of special elements (CWE-77) within the Dynamic DNS (DDNS) encryption component. An attacker with low-privileged credentials can send specially crafted network requests to execute arbitrary system commands. This vulnerability has been observed in active exploitation. While some models have received hotfixes, many affected devices are considered End-of-Life (EoL), and the vendor recommends discontinuing their use if patches are unavailable.

Affected products

  • D-Link DCS-2530L Firmware before 1.06.01 Hotfix
  • D-Link DCS-2670L Firmware up to 2.02
  • D-Link DCS-4603 Firmware before 1.04.02
  • D-Link DCS-4622 Firmware before 2.01.10
  • D-Link DCS-4701E Firmware before 2.03.01
  • D-Link DCS-4703E Firmware before 1.03.04
  • D-Link DCS-4705E Firmware before 1.03.02
  • D-Link DCS-4802E Firmware before 2.01.01

Timeline

  • 2020-09-11: disclosed: Initial NIST analysis published
  • 2025-08-05: kev added: Added to CISA Known Exploited Vulnerabilities catalog

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