CVE-2010-5330: Ubiquiti AirOS Command Injection Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-04-15. EPSS: 39.4% chance of exploitation in the next 30 days.

On certain Ubiquiti devices, Command Injection exists via a GET request to stainfo.cgi (aka Show AP info) because the ifname variable is not sanitized, as demonstrated by shell metacharacters. The fixed version is v4.0.1 for 802.11 ISP products, v5.3.5 for AirMax ISP products, and v5.4.5 for AirSync firmware. For example, Nanostation5 (Air OS) is affected.

Affected products

• UI AirOS: before 4.0.1 (fixed in 4.0.1); from 4.0.2, before 5.3.5 (fixed in 5.3.5); from 5.3.6, before 5.4.5 (fixed in 5.4.5)

Published 2019-06-11. Last modified 2026-06-16.