CVE-2010-5330
CVE-2010-5330 is a security flaw in Ubiquiti AirOS, networking equipment for homes and offices. Attackers can run commands on Ubiquiti AirOS. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 15 Apr 2022.[1]
Ubiquiti AirOS is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Ubiquiti has published a fix or advice.
Description
CISA calls it a command injection in Ubiquiti AirOS. In its words: “Certain Ubiquiti devices contain a command injection vulnerability via a GET request to stainfo.cgi.”[1]
The CVE record adds: “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.”[2]
The underlying weakness is command injection (CWE-77), in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Ubiquiti’s advisory has them[3]. CISA names the product as Ubiquiti AirOS.
Most families won’t have Ubiquiti AirOS; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 15 Apr 2022, 1,039 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 6 May 2022 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 40%. That’s in the top 2% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Ubiquiti has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Check whether you use it.Ubiquiti AirOS is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 6 May 2022 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 40%.[4] |
See also
Other Ubiquiti flaws
- CVE-2026-34910, Ubiquiti UniFi OS: improper input validation ·
- CVE-2026-34909, Ubiquiti UniFi OS: path traversal ·
- CVE-2026-34908, Ubiquiti UniFi OS: improper access control ·
Other command injection flaws
- CVE-2026-105134, AhsayCBS: command injection ·
- CVE-2026-96951, Microsoft Windows: command injection ·
- CVE-2016-3081, Apache Struts: command injection ·
- CVE-2026-8037, Progress LoadMaster: command injection ·
- CVE-2025-29635, D-Link DIR-823X: command injection ·
Added the same day
- CVE-2022-22960, VMware products: privilege escalation ·
- CVE-2022-1364, Chrome and other Chromium browsers: type confusion ·
- CVE-2019-3929, Crestron products: command injection ·
- CVE-2019-16057, D-Link DNS-320 Storage Device: DNS-320 remote code execution ·
- CVE-2018-7841, Schneider Electric U.motion Builder: SQL injection ·
Every Ubiquiti flaw on CISA’s list · Everything added in April 2022
References
- ^ Cybersecurity and Infrastructure Security Agency. “Ubiquiti AirOS Command Injection Vulnerability”. Known Exploited Vulnerabilities Catalog, added 15 Apr 2022.
- ^ National Institute of Standards and Technology. “CVE-2010-5330 Detail”. National Vulnerability Database, published 11 Jun 2019.
- ^ Ubiquiti. Advisories and fixes: community.ubnt.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.402, percentile 98.6, 31 Oct 2026.
- CVE Program. “CVE-2010-5330”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.