# CVE-2025-7553: D-Link DIR-818LW System Time Page os command injection

> Remote attackers can execute arbitrary OS commands via the NTP Server argument in the System Time Page of unsupported D-Link DIR-818LW routers.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jul 2025
- **Updated:** 14 Jul 2025
- **Also known as:** GHSA-86cj-mgp6-w7fc

## What is CVE-2025-7553?

CVE-2025-7553 is a medium-severity command injection vulnerability in D-Link DIR-818LW, published on 13 Jul 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in D-Link DIR-818LW up to 20191215. This affects an unknown part of the component System Time Page. The manipulation of the argument NTP Server leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2025-7553?

It affects 1 product.


Products: Dlink Dir-818lw Firmware.

## How do I fix CVE-2025-7553?

No fix has been published for CVE-2025-7553 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-7553 being exploited?

There is no known exploitation of CVE-2025-7553 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DIR-818LW

- [CVE-2018-20114](https://insights.sbomify.com/CVE-2018-20114/): Command injection in n/a (critical 9.8)
- [CVE-2019-13481](https://insights.sbomify.com/CVE-2019-13481/): Command injection in n/a (high 8.8)
- [CVE-2019-13482](https://insights.sbomify.com/CVE-2019-13482/): Command injection in n/a (high 8.8)
- [CVE-2019-12786](https://insights.sbomify.com/CVE-2019-12786/): Command injection in n/a (high 8.8)
- [CVE-2019-12787](https://insights.sbomify.com/CVE-2019-12787/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-7553 and fix it if it is affected.

What it is: CVE-2025-7553 is a medium-severity command injection vulnerability in D-Link DIR-818LW, published on 13 Jul 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-7553 in the wild and no public exploit code.

Affected product: D-Link DIR-818LW. 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-2025-7553/ (Markdown: https://insights.sbomify.com/CVE-2025-7553/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7553
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7553
- OSV: https://osv.dev/vulnerability/CVE-2025-7553

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-7553/
Summaries are generated and may contain mistakes; the official description above is the record.