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
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 49%CVSS: 9.8Exploit: NoneExposed: 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
98.8%
KEV
⚠ Exploited

Published

January 14, 2022

Last Modified

November 7, 2025

Advisory Details (5)

Auto-updated May 26, 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

Web Application Security, Testing, & Scanning - PortSwigger

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 46× in last 7d / 231× 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 453 total refreshes for this CVE.

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

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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.

Dependency Blast Radius

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