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

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-24 · updated 2026-06-17
Weakness: CWE-78

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.

Affected products

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

References

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

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