D-Link DIR-110/DIR-412/DIR-600/DIR-615/DIR-645/DIR-815 1.03 service.cgi Event os command injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-110, DIR-412, DIR-600, DIR-615, DIR-645 and DIR-815 1.03. Affected by this vulnerability is an unknown functionality of the file service.cgi. Performing a manipulation of the argument Event results in os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is identified as CVE-2018-25115. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in D-Link DIR-110, DIR-412, DIR-600, DIR-615, DIR-645 and DIR-815 1.03. This affects an unknown functionality of the file service.cgi. The manipulation of the argument EVENT with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple D-Link DIR-series routers, including DIR-110, DIR-412, DIR-600, DIR-610, DIR-615, DIR-645, and DIR-815 firmware version 1.03, contain a vulnerability in the service.cgi endpoint that allows remote attackers to execute arbitrary system commands without authentication. The flaw stems from improper input handling in the EVENT=CHECKFW parameter, which is passed directly to the system shell without sanitization. A crafted HTTP POST request can inject commands that are executed with root privileges, resulting in full device compromise. These router models are no longer supported at the time of assignment and affected version ranges may vary.

The weakness was released by Cr0n1c. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-25115 since 08/25/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/25/2025). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

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 Exploit-DB (43496). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-110
• DIR-412
• DIR-600
• DIR-615
• DIR-645
• DIR-815

Version

• 1.03

License

• commercial

Support

• end of life

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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Duplicate

• Submit #XXXXXX: X-xxxx Xxx-xxx Xxxxxxxx X.xxxxx Xxxxxxx Xxxxxxxxx (by Xuhsy)

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