D-Link DCS-2530L/DCS-2670L cgi-bin/ddns_enc.cgi command injection

Summaryinfo

A vulnerability classified as critical was found in D-Link DCS-2530L and DCS-2670L. This vulnerability affects unknown code of the file cgi-bin/ddns_enc.cgi. Executing a manipulation can lead to command injection. This vulnerability is handled as CVE-2020-25079. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability has been found in D-Link DCS-2530L and DCS-2670L (version unknown) and classified as critical. This vulnerability affects an unknown function of the file cgi-bin/ddns_enc.cgi. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on D-Link DCS-2530L before 1.06.01 Hotfix and DCS-2670L through 2.02 devices. cgi-bin/ddns_enc.cgi allows authenticated command injection.

The weakness was released 09/02/2020. This vulnerability was named CVE-2020-25079 since 09/02/2020. The attack can be initiated remotely. The successful exploitation requires a single authentication. Technical details and also a exploit are known. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/23/2026). The MITRE ATT&CK project declares the attack technique as T1202.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 316488 (D-Link DCS-2530L < 1.07 and DCS-2670L < 2.03 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. This issue was added on 08/05/2025 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 08/26/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (316488). Entry connected to this vulnerability is available at VDB-160635. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• D-Link

Name

• DCS-2530L
• DCS-2670L

License

• commercial

Website

• Vendor: https://www.dlink.com/

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Once again VulDB remains the best source for vulnerability data.

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