CVE-2022-23227

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 48%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
48%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

January 14, 2022

Last Modified

November 7, 2025

Advisory Details (5)

Auto-updated Sep 17, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: github_pr, cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23227
generic

PortSwigger — Web security tools, training and research

https://portswigger.net/daily-swig/researcher-discloses-alleged-zero-day-vulnerabilities-in-nuuo-nvrmini2-recording-device
generic

Researcher discloses alleged zero-day vulnerabilities in NUUO NVRmini2 recording | Hacker News

https://news.ycombinator.com/item?id=29936569
github_pr

Add exploit for NUUO NVRmini2 zero day unauth RCE as root

Upstream fix in progress (PR #16044 · rapid7/metasploit-framework, state=closed)

https://github.com/rapid7/metasploit-framework/pull/16044
generic🟡 PoC Available

PoC/advisories/NUUO/nuuo_nvrmini_round2.mkd at master · pedrib/PoC · GitHub

https://github.com/pedrib/PoC/blob/master/advisories/NUUO/nuuo_nvrmini_round2.mkd

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 59× in last 7d / 255× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 930 total refreshes for this CVE.

  1. 2026-09-20 03:03 UTCGHSA enrichment
  2. 2026-09-19 23:26 UTCGHSA enrichment
  3. 2026-09-19 19:49 UTCGHSA enrichment
  4. 2026-09-19 16:12 UTCEG score recompute
  5. 2026-09-19 16:12 UTCGHSA enrichment
  6. 2026-09-19 12:35 UTCGHSA enrichment
  7. 2026-09-19 08:57 UTCGHSA enrichment
  8. 2026-09-19 05:19 UTCGHSA enrichment
  9. 2026-09-19 01:42 UTCGHSA enrichment
  10. 2026-09-18 22:05 UTCEG score recompute
  11. 2026-09-18 22:05 UTCGHSA enrichment
  12. 2026-09-18 19:20 UTCCISA KEV update
  13. 2026-09-18 18:28 UTCGHSA enrichment
  14. 2026-09-18 14:51 UTCGHSA enrichment
  15. 2026-09-18 14:15 UTCCISA KEV update
  16. 2026-09-18 11:14 UTCGHSA enrichment
  17. 2026-09-18 07:37 UTCGHSA enrichment
  18. 2026-09-18 04:00 UTCGHSA enrichment
  19. 2026-09-18 00:23 UTCGHSA enrichment
  20. 2026-09-17 20:46 UTCEG score recompute
  21. 2026-09-17 20:46 UTCGHSA enrichment
  22. 2026-09-17 19:23 UTCEPSS rescore
  23. 2026-09-17 17:08 UTCGHSA enrichment
  24. 2026-09-17 13:17 UTCGHSA enrichment
  25. 2026-09-17 09:40 UTCGHSA enrichment
Show 75 more
  1. 2026-09-17 06:03 UTCGHSA enrichment
  2. 2026-09-17 02:25 UTCGHSA enrichment
  3. 2026-09-16 22:46 UTCGHSA enrichment
  4. 2026-09-16 19:09 UTCGHSA enrichment
  5. 2026-09-16 15:32 UTCEG score recompute
  6. 2026-09-16 15:32 UTCGHSA enrichment
  7. 2026-09-16 14:10 UTCCISA KEV update
  8. 2026-09-16 14:05 UTCEPSS rescore
  9. 2026-09-16 11:54 UTCGHSA enrichment
  10. 2026-09-16 08:17 UTCEG score recompute
  11. 2026-09-16 08:17 UTCGHSA enrichment
  12. 2026-09-16 04:39 UTCGHSA enrichment
  13. 2026-09-16 01:02 UTCGHSA enrichment
  14. 2026-09-15 21:25 UTCGHSA enrichment
  15. 2026-09-15 17:48 UTCGHSA enrichment
  16. 2026-09-15 14:11 UTCGHSA enrichment
  17. 2026-09-15 10:33 UTCGHSA enrichment
  18. 2026-09-15 06:55 UTCGHSA enrichment
  19. 2026-09-15 03:18 UTCEG score recompute
  20. 2026-09-15 03:18 UTCGHSA enrichment
  21. 2026-09-15 03:06 UTCEPSS rescore
  22. 2026-09-14 23:41 UTCGHSA enrichment
  23. 2026-09-14 20:04 UTCGHSA enrichment
  24. 2026-09-14 19:24 UTCCISA KEV update
  25. 2026-09-14 16:26 UTCGHSA enrichment
  26. 2026-09-14 12:49 UTCGHSA enrichment
  27. 2026-09-14 09:12 UTCGHSA enrichment
  28. 2026-09-14 05:35 UTCGHSA enrichment
  29. 2026-09-14 01:58 UTCGHSA enrichment
  30. 2026-09-13 22:21 UTCGHSA enrichment
  31. 2026-09-13 18:44 UTCGHSA enrichment
  32. 2026-09-13 15:07 UTCGHSA enrichment
  33. 2026-09-13 11:30 UTCGHSA enrichment
  34. 2026-09-13 07:52 UTCGHSA enrichment
  35. 2026-09-13 04:15 UTCGHSA enrichment
  36. 2026-09-13 00:39 UTCGHSA enrichment
  37. 2026-09-12 21:02 UTCGHSA enrichment
  38. 2026-09-12 17:25 UTCEG score recompute
  39. 2026-09-12 17:25 UTCGHSA enrichment
  40. 2026-09-12 14:57 UTCEPSS rescore
  41. 2026-09-12 13:48 UTCGHSA enrichment
  42. 2026-09-12 10:11 UTCGHSA enrichment
  43. 2026-09-12 06:33 UTCGHSA enrichment
  44. 2026-09-12 02:57 UTCGHSA enrichment
  45. 2026-09-11 23:20 UTCGHSA enrichment
  46. 2026-09-11 19:43 UTCGHSA enrichment
  47. 2026-09-11 18:49 UTCCISA KEV update
  48. 2026-09-11 16:06 UTCEG score recompute
  49. 2026-09-11 16:06 UTCGHSA enrichment
  50. 2026-09-11 14:49 UTCEPSS rescore
  51. 2026-09-11 12:28 UTCGHSA enrichment
  52. 2026-09-11 08:49 UTCGHSA enrichment
  53. 2026-09-11 05:12 UTCGHSA enrichment
  54. 2026-09-11 01:35 UTCGHSA enrichment
  55. 2026-09-10 21:58 UTCGHSA enrichment
  56. 2026-09-10 19:28 UTCCISA KEV update
  57. 2026-09-10 18:21 UTCGHSA enrichment
  58. 2026-09-10 14:44 UTCGHSA enrichment
  59. 2026-09-10 11:07 UTCEG score recompute
  60. 2026-09-10 11:06 UTCGHSA enrichment
  61. 2026-09-10 07:28 UTCGHSA enrichment
  62. 2026-09-10 03:49 UTCGHSA enrichment
  63. 2026-09-10 00:11 UTCGHSA enrichment
  64. 2026-09-09 20:33 UTCGHSA enrichment
  65. 2026-09-09 19:08 UTCCISA KEV update
  66. 2026-09-09 16:54 UTCGHSA enrichment
  67. 2026-09-09 13:15 UTCGHSA enrichment
  68. 2026-09-09 09:36 UTCGHSA enrichment
  69. 2026-09-09 05:59 UTCGHSA enrichment
  70. 2026-09-09 02:22 UTCGHSA enrichment
  71. 2026-09-08 22:44 UTCEG score recompute
  72. 2026-09-08 22:44 UTCGHSA enrichment
  73. 2026-09-08 21:57 UTCEPSS rescore
  74. 2026-09-08 19:07 UTCGHSA enrichment
  75. 2026-09-08 18:54 UTCCISA KEV update

Frequently asked(6)

What is CVE-2022-23227?
CVE-2022-23227 is a critical vulnerability published on January 14, 2022. 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 handleimportuser.php authentication. When combined with another flaw (CVE-2011-5325), it is possible to overwrite arbitrary files under…
When was CVE-2022-23227 disclosed?
CVE-2022-23227 was first published in the National Vulnerability Database on January 14, 2022, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23227 actively exploited?
Yes. CISA added CVE-2022-23227 to the Known Exploited Vulnerabilities catalog on December 18, 2024, affecting NUUO NVRmini2 Devices. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-23227?
CVE-2022-23227 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2022-23227?
CVE-2022-23227 affects NUUO NVRmini2 Devices. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2022-23227?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-23227, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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