CVE-2022-23227
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedNUUO 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceNUUO NVRmini2 through version 3.11 contains an authentication bypass in handle_import_user.php allowing unauthenticated attackers to upload encrypted TAR archives, enabling creation of arbitrary users. When chained with CVE-2011-5325 (file overwrite), attackers can write files to the web root and achieve root-level code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 3.11.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device as NUUO NVRmini2Check the product label, web interface banner, or SNMP information for 'NVRmini2' brandingAffected if The device is not an NUUO NVRmini2 unit
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Determine the firmware versionAccess the NVRmini2 web interface (typically port 80/443), navigate to System > Firmware/About, or check the admin panel for the firmware build numberAffected if The firmware version is 3.11.0 or lower
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Locate the vulnerable PHP endpointAttempt to access handle_import_user.php directly via HTTP/HTTPS without authentication (e.g., GET /handle_import_user.php)Affected if The file exists and responds without requiring login credentials
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Verify web interface exposureConfirm the NVRmini2 web interface is reachable from the network (check listening ports and firewall rules)Affected if The web management interface is directly accessible from untrusted networks without VPN or firewall isolation
A user is affected if they are running NUUO NVRmini2 firmware version 3.11.0 or lower with the web interface exposed to network access where an unauthenticated attacker could reach handle_import_user.php.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade NUUO NVRmini2 to the latest patched firmware version. If no patch is available, disable the web interface or implement network access controls to prevent unauthorized access to the affected PHP endpoints.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-23227 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-23227 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data