CVE-2022-23227

Name: CVE-2022-23227
Creator: NVD / NIST
Published: 2022-01-14T18:15:10.303+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 49.43%

Last modified Jun 17, 2026

CVE-2022-23227 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 49.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

49.43%

98.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jan 8, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nuuo	Nvrmini2 Firmware	<= 3.11.0

References

https://github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkdExploit, Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/16044Exploit, Issue Tracking, Third Party Advisory
https://news.ycombinator.com/item?id=29936569Third Party Advisory
https://portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilities-in-nuuo-nvrmini2-recording-deviceExploit, Third Party Advisory
https://github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkdExploit, Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/16044Exploit, Issue Tracking, Third Party Advisory
https://news.ycombinator.com/item?id=29936569Third Party Advisory
https://portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilities-in-nuuo-nvrmini2-recording-deviceExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23227US Government Resource

Timeline

Published: Jan 14, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-23227?

How severe is CVE-2022-23227?

CVE-2022-23227 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 49.43% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2022-23227?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-23227?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST