What is CVE-2022-23227?

CVE-2022-23227 is a critical-severity vulnerability in Nuuo Nvrmini2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-01-14.

How severe is CVE-2022-23227?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-23227 known to be exploited?

Yes. CVE-2022-23227 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

Auth bypass in Nuuo Nvrmini2

CVE-2022-23227

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.

Vulnerability class: Broken Authentication

Published 2022-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.485 (98.9th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.485 · newest: 0.485 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-12-18. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-01-08.

Required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.

Public proof-of-concept exploits

References

github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkd (Exploit, Third Party Advisory)
github.com/rapid7/metasploit-framework/pull/16044 (Exploit, Third Party Advisory, Issue Tracking)
portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilitie… (Exploit, Third Party Advisory)
news.ycombinator.com/item (Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-23227?: CVE-2022-23227 is a critical-severity vulnerability in Nuuo Nvrmini2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-01-14.
How severe is CVE-2022-23227?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-23227 known to be exploited?: Yes. CVE-2022-23227 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.