CVE-2010-5330

Ubiquiti AirOS Command Injection Vulnerability

Exploited in attacks Critical 9.8 Attack chance: 40%

What it is

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.

CISA: Certain Ubiquiti devices contain a command injection vulnerability via a GET request to stainfo.cgi.

What to do

Apply updates per vendor instructions.

Deadline for US federal agencies: May 6, 2022

Added to the CISA list: April 15, 2022
Published: June 11, 2019
Severity: Critical 9.8 CVSS 3.1
Chance of attacks in the next 30 days (EPSS): 40% in the top 1.4% of all known vulnerabilities
Weakness: CWE-77
More details: NVD · CVE.org · CISA

All references (2)

More exploited flaws from Ubiquiti

Added	Vulnerability	Product	Severity	Attack chance
Jun 23, 2026	Improper Access ControlCVE-2026-34908	UniFi OS	Critical 10.0	88%
Jun 23, 2026	Path TraversalCVE-2026-34909	UniFi OS	Critical 10.0	68%
Jun 23, 2026	Improper Input ValidationCVE-2026-34910	UniFi OS	Critical 10.0	90%

All of them →

Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.