Critical 9.8Known exploited (CISA KEV)Published Jun 11, 2019

CVE-2010-5330On 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.

Updated under an hour ago (2026-10-19 07:50 UTC)

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It affects ui airos. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Apr 15, 2022; federal agencies had to remediate by May 6, 2022. Treat that date as your deadline.

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Exploited in the last 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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-77
Known exploited: Added to CISA KEV Apr 15, 2022; federal remediation due May 6, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 40.23% (percentile 99)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ui airos ui:airos	before 4.0.1; from 4.0.2 before 5.3.5; from 5.3.6 before 5.4.5	NVD

References

https://www.exploit-db.com/exploits/14146x-refsource-misc, third-party-advisory, vdb-entry
https://community.ubnt.com/t5/airMAX-General-Discussion/AirOS-Security-Exploit-Updated-Firmware/td-p/212974x-refsource-misc, issue-tracking, patch, vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-5330us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.