SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2010-5330

Ubiquiti AirOS Command Injection Vulnerability

KEVCRITICAL 9.8EPSS 40.2%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 6 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
40.23% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 15 April 2022 · due 6 May 2022
Weakness
CWE-77
Affected
ui/airos
Source
cve@mitre.org
EPSS trend
0%23%45%24 September 2026: 39.36%30 October 2026: 40.23%24 September 202630 October 2026

EPSS moved from 39.4% on 24 September 2026 to 40.2% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2010-5330

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.