---
title: "CVE-2022-23227: NUUO NVRmini2 Devices Missing Authentication Vulnerability "
url: https://erroneo.us/security/cve/CVE-2022-23227/
description: "CVE-2022-23227 (NUUO NVRmini2 Devices): Exploited in the wild (CISA KEV). NUUO NVRmini2 through 3.11 allows an unauthenticated attacker to upload an…"
type: vulnerability-record
section: "Security Digest"
date_published: 2022-01-14
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2022-23227"
kev: true
cvss: 9.8
epss: 0.48497
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2022-23227: NUUO NVRmini2 Devices Missing Authentication Vulnerability 

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run NUUO NVRmini2 Devices. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-12-18, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-01-08 ; treat that as the outer limit, not the target.
- EPSS 48.5% , percentile 99: FIRST’s model estimates a 48.5% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

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 handleimportuser.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.

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2024-12-18; federal due date 2025-01-08. Known ransomware use: Unknown.
- CISA required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 48.50% probability of exploitation activity in the next 30 days; percentile 99.

## Sources

- [Listed in CISA KEV notes (nuuo.com)](https://nuuo.com/wp-content/uploads/2023/03/NUUO-EOL-letter＿NVRmini-2-and-NVRsolo-series.pdf)
- [CVE.org record CVE-2022-23227](https://www.cve.org/CVERecord?id=CVE-2022-23227)
- [NVD entry CVE-2022-23227](https://nvd.nist.gov/vuln/detail/CVE-2022-23227)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23227)
- [github.com](https://github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkd)
- [github.com](https://github.com/rapid7/metasploit-framework/pull/16044)
- [portswigger.net](https://portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilities-in-nuuo-nvrmini2-recording-device)
- [news.ycombinator.com](https://news.ycombinator.com/item?id=29936569)

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Source page: https://erroneo.us/security/cve/CVE-2022-23227/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt