# CVE-2018-25115: D-Link DIR-110/412/600/615/645/815 RCE via service.cgi

> Remote attackers can execute arbitrary system commands with root privileges on unsupported D-Link routers via the service.cgi endpoint.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Aug 2025
- **Updated:** 25 May 2026
- **Also known as:** GHSA-f5fw-w387-r642

## What is CVE-2018-25115?

CVE-2018-25115 is a critical command injection vulnerability in D-Link DIR-110, published on 27 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-08-21 UTC.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2018-25115?

It affects 7 products.


Products: Dlink Dir-110 Firmware, Dlink Dir-412 Firmware, Dlink Dir-600 Firmware, Dlink Dir-610 Firmware, Dlink Dir-615 Firmware, Dlink Dir-645 Firmware, Dlink Dir-815 Firmware.

## How do I fix CVE-2018-25115?

No fix has been published for CVE-2018-25115 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-25115 being exploited?

There is no known exploitation of CVE-2018-25115 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-25115 and fix it if it is affected.

What it is: CVE-2018-25115 is a critical command injection vulnerability in D-Link DIR-110, published on 27 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-25115 in the wild and no public exploit code.

Affected product: D-Link DIR-110. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-25115/ (Markdown: https://insights.sbomify.com/CVE-2018-25115/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-25115
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25115
- OSV: https://osv.dev/vulnerability/CVE-2018-25115

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-25115/
Summaries are generated and may contain mistakes; the official description above is the record.