CVE-2026-33000

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-22. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

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

A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

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
Severity91% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

May 22, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic
https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b

Vendor Advisories for CVE-2026-33000(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 95× 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 336 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-33000?
CVE-2026-33000 is a critical vulnerability published on May 22, 2026. A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
When was CVE-2026-33000 disclosed?
CVE-2026-33000 was first published in the National Vulnerability Database on May 22, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33000 actively exploited?
CVE-2026-33000 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 32.6% of all scored CVEs.
What is the CVSS score of CVE-2026-33000?
CVE-2026-33000 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-33000?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33000, 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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