CVE-2026-0625
Command Injection in D-Link DSL Gateways Enables Remote Code Execution
Description
Description
Multiple D-Link DSL gateway devices contain a command injection vulnerability in the dnscfg.cgi endpoint due to improper sanitization of user-supplied DNS configuration parameters. An unauthenticated remote attacker can inject and execute arbitrary shell commands, resulting in remote code execution. The affected endpoint is also associated with unauthenticated DNS modification (“DNSChanger”) behavior documented by D-Link, which reported active exploitation campaigns targeting firmware variants of the DSL-2740R, DSL-2640B, DSL-2780B, and DSL-526B models from 2016 through 2019. Exploitation evidence was observed by the Shadowserver Foundation on 2025-11-27 (UTC). Affected devices were declared end-of-life/end-of-service in early 2020.
CVSS Scores
EPSS Scores
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Affected Vendors & Products
| Vendor | Product | Version |
|---|---|---|
| d-link | dsl-526b | * |
| d-link | dsl-2740r | * |
| d-link | dsl-2780b | * |
| d-link | dsl-2640b | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| 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. |
Attack-Flow Graph
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Meta Information
CVE Publication Date:
2026-01-05
CVE Last Modified Date:
2026-01-05
Report Generation Date:
2026-01-07
AI Powered Q&A Generation:
2026-01-06
EPSS Last Evaluated Date:
2026-01-06
NVD Report Link: