CVE-2022-23227Known exploitationPublic exploitNetwork attack vector

Unauthorized account creation via unauthenticated import handler

Published Jan 14, 2022 · Updated Oct 21, 2025

Missing authentication in NUUO NVRmini2 through 3.11 allows remote attackers to add arbitrary users through its user-import endpoint. The public handle_import_user.php endpoint copies an uploaded encrypted configuration archive into /tmp and invokes cgi_system importuser, which decrypts and imports passwd and shadow entries without authenticating the request. Network access to the web interface is sufficient to create login-capable accounts; root code execution additionally depends on a separate BusyBox path-traversal flaw.

CVSS severity9.8
Critical
EPSS probability48.50%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authentication in NUUO NVRmini2 through 3.11 allows remote attackers to add arbitrary users through its user-import endpoint. The public handle_import_user.php endpoint copies an uploaded encrypted configuration archive into /tmp and invokes cgi_system importuser, which decrypts and imports passwd and shadow entries without authenticating the request. Network access to the web interface is sufficient to create login-capable accounts; root code execution additionally depends on a separate BusyBox path-traversal flaw.

The record

CVE
CVE-2022-23227
Published
Jan 14, 2022
Updated
Oct 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1190, T1136.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application
T1136.001Local Account

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo