CVE-2022-23227
CVE-2022-23227 is a security flaw in NUUO NVRmini2 Devices. Attackers can run their own code on NUUO NVRmini2 Devices from anywhere, without logging in. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 18 Dec 2024.[1]
NUUO NVRmini2 Devices 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. NUUO has published a fix or advice.
Description
CISA calls it a missing authentication in NUUO NVRmini2 Devices. In its words: “NUUO NVRmini2 devices contain a missing authentication vulnerability that allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users.”[1]
The CVE record adds: “NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an encrypted TAR archive, which can be abused to add arbitrary users because of the lack of handle_import_user.php authentication. When combined with another flaw (CVE-2011-5325), it is possible to overwrite arbitrary files under the web root and achieve code execution as root.”[2]
The underlying weakness is missing authentication (CWE-306), 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; NUUO’s advisory has them[3]. CISA names the product as NUUO NVRmini2 Devices.
Most families won’t have NUUO NVRmini2 Devices; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 18 Dec 2024, 1,069 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 8 Jan 2025 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 48%. 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
NUUO has published a fix or advice.[3] CISA’s required action: “The impacted product is end-of-life (EoL) and/or end-of-service (EoS).”[1]
- Check whether you use it.NUUO NVRmini2 Devices 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 8 Jan 2025 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 48%.[4] |
See also
Other NUUO flaws
- CVE-2018-14933, NUUO NVRmini Devices: OS command injection ·
Other missing authentication flaws
- CVE-2026-111357, Ivanti Connect Secure: missing authentication for critical function ·
- CVE-2026-67277, MikroTik RouterOS: missing authentication for critical function ·
- CVE-2026-81578, PaperCut NG/MF: missing authentication for critical function ·
- CVE-2026-72529, TrueConf Server: missing authentication for critical function ·
- CVE-2026-56164, Microsoft SharePoint Server: missing authentication for critical function ·
Added the same day
- CVE-2021-40407, Reolink RLC-410W IP Camera: OS command injection ·
- CVE-2019-11001, Reolink Multiple IP Cameras: OS command injection ·
- CVE-2018-14933, NUUO NVRmini Devices: OS command injection ·
References
- ^ Cybersecurity and Infrastructure Security Agency. “NUUO NVRmini2 Devices Missing Authentication Vulnerability”. Known Exploited Vulnerabilities Catalog, added 18 Dec 2024.
- ^ National Institute of Standards and Technology. “CVE-2022-23227 Detail”. National Vulnerability Database, published 14 Jan 2022.
- ^ NUUO. Advisories and fixes: nuuo.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.485, percentile 98.9, 31 Oct 2026.
- CVE Program. “CVE-2022-23227”. 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.