How severe is CVE-2022-23227?

CVE-2022-23227 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-23227 being actively exploited?

Yes. CVE-2022-23227 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-12-18, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2022-23227?

CVE-2022-23227 affects Nuuo Nvrmini2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-23227?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2022-23227 have an EU (EUVD) identifier?

Yes. CVE-2022-23227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28314. It is also flagged as exploited in the EUVD (since 2024-12-18).

When was CVE-2022-23227 published?

CVE-2022-23227 was published on 2022-01-14 and last updated on 2026-06-17.

CVE-2022-23227

CVE-2022-23227 is a critical-severity vulnerability in Nuuo Nvrmini2 Firmware with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-12-18). The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 49% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2024-12-18)
EU (EUVD) id: EUVD-2022-28314
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-12-18)
Weakness: CWE-306
Affected product: Nuuo Nvrmini2 Firmware
Published: 2022-01-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2022-23227?: CVE-2022-23227 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-23227 being actively exploited?: Yes. CVE-2022-23227 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-12-18, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-23227?: CVE-2022-23227 affects Nuuo Nvrmini2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-23227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-23227 have an EU (EUVD) identifier?: Yes. CVE-2022-23227 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-28314. It is also flagged as exploited in the EUVD (since 2024-12-18).
When was CVE-2022-23227 published?: CVE-2022-23227 was published on 2022-01-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:nuuo:nvrmini2_firmware:*:*:*:*:*:*:*:*

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