CVE-2026-54408

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: 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 could exploit an Improper Access Control vulnerability found in UniFi Protect Application to bypass authentication for data streaming.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 7, 2026

Advisory Details (1)

Auto-updated Jul 26, 2026
No patch confirmed yet.
generic
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

Vendor Advisories for CVE-2026-54408(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 40× in last 7d / 103× 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 103 total refreshes for this CVE.

  1. 2026-07-31 07:43 UTCGHSA enrichment
  2. 2026-07-31 03:33 UTCGHSA enrichment
  3. 2026-07-30 23:23 UTCGHSA enrichment
  4. 2026-07-30 19:13 UTCEG score recompute
  5. 2026-07-30 19:13 UTCGHSA enrichment
  6. 2026-07-30 16:28 UTCEPSS rescore
  7. 2026-07-30 14:48 UTCGHSA enrichment
  8. 2026-07-30 10:18 UTCEG score recompute
  9. 2026-07-30 10:18 UTCGHSA enrichment
  10. 2026-07-30 06:08 UTCGHSA enrichment
  11. 2026-07-30 01:59 UTCEG score recompute
  12. 2026-07-30 01:59 UTCGHSA enrichment
  13. 2026-07-30 01:30 UTCEPSS rescore
  14. 2026-07-29 21:48 UTCGHSA enrichment
  15. 2026-07-29 16:48 UTCGHSA enrichment
  16. 2026-07-29 12:37 UTCGHSA enrichment
  17. 2026-07-29 08:27 UTCGHSA enrichment
  18. 2026-07-29 02:48 UTCGHSA enrichment
  19. 2026-07-28 22:38 UTCGHSA enrichment
  20. 2026-07-28 18:08 UTCEG score recompute
  21. 2026-07-28 18:08 UTCGHSA enrichment
  22. 2026-07-28 15:37 UTCEPSS rescore
  23. 2026-07-28 13:47 UTCGHSA enrichment
  24. 2026-07-28 09:23 UTCGHSA enrichment
  25. 2026-07-28 05:07 UTCGHSA enrichment
Show 75 more
  1. 2026-07-28 00:47 UTCGHSA enrichment
  2. 2026-07-27 20:10 UTCGHSA enrichment
  3. 2026-07-27 15:52 UTCEG score recompute
  4. 2026-07-27 15:52 UTCGHSA enrichment
  5. 2026-07-27 10:14 UTCGHSA enrichment
  6. 2026-07-27 06:05 UTCGHSA enrichment
  7. 2026-07-27 01:34 UTCGHSA enrichment
  8. 2026-07-26 21:25 UTCGHSA enrichment
  9. 2026-07-26 17:15 UTCEG score recompute
  10. 2026-07-26 17:15 UTCGHSA enrichment
  11. 2026-07-26 14:54 UTCEPSS rescore
  12. 2026-07-26 13:05 UTCEG score recompute
  13. 2026-07-26 13:05 UTCGHSA enrichment
  14. 2026-07-25 14:18 UTCEPSS rescore
  15. 2026-07-24 14:18 UTCEPSS rescore
  16. 2026-07-23 14:18 UTCEPSS rescore
  17. 2026-07-23 03:19 UTCEG score recompute▲ 1.20
  18. 2026-07-22 14:08 UTCEPSS rescore
  19. 2026-07-20 17:08 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 14:31 UTCEPSS rescore
  22. 2026-07-19 02:29 UTCEPSS rescore
  23. 2026-07-18 10:04 UTCEPSS rescore
  24. 2026-07-17 02:54 UTCGHSA enrichment
  25. 2026-07-16 17:03 UTCEPSS rescore
  26. 2026-07-16 14:04 UTCGHSA enrichment
  27. 2026-07-16 01:14 UTCGHSA enrichment
  28. 2026-07-15 16:57 UTCEPSS rescore
  29. 2026-07-15 16:57 UTCEPSS rescore
  30. 2026-07-15 12:25 UTCGHSA enrichment
  31. 2026-07-15 02:00 UTCEPSS rescore
  32. 2026-07-15 02:00 UTCEPSS rescore
  33. 2026-07-14 23:34 UTCGHSA enrichment
  34. 2026-07-14 10:43 UTCGHSA enrichment
  35. 2026-07-13 22:31 UTCEPSS rescore
  36. 2026-07-13 21:46 UTCGHSA enrichment
  37. 2026-07-13 08:56 UTCGHSA enrichment
  38. 2026-07-13 06:13 UTCEPSS rescore
  39. 2026-07-13 06:13 UTCEPSS rescore
  40. 2026-07-12 20:07 UTCGHSA enrichment
  41. 2026-07-12 07:18 UTCGHSA enrichment
  42. 2026-07-12 05:46 UTCEPSS rescore
  43. 2026-07-11 18:29 UTCGHSA enrichment
  44. 2026-07-11 08:27 UTCEPSS rescore
  45. 2026-07-11 08:27 UTCEPSS rescore
  46. 2026-07-11 05:40 UTCGHSA enrichment
  47. 2026-07-10 16:51 UTCGHSA enrichment
  48. 2026-07-10 04:02 UTCGHSA enrichment
  49. 2026-07-09 19:10 UTCEPSS rescore
  50. 2026-07-09 19:10 UTCEPSS rescore
  51. 2026-07-09 15:12 UTCGHSA enrichment
  52. 2026-07-09 02:22 UTCGHSA enrichment
  53. 2026-07-08 15:16 UTCEPSS rescore
  54. 2026-07-08 15:16 UTCEPSS rescore
  55. 2026-07-08 13:33 UTCGHSA enrichment
  56. 2026-07-08 00:41 UTCGHSA enrichment
  57. 2026-07-07 18:13 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  58. 2026-07-07 13:46 UTCEPSS rescore
  59. 2026-07-07 13:46 UTCEPSS rescore
  60. 2026-07-07 11:53 UTCGHSA enrichment
  61. 2026-07-06 23:04 UTCGHSA enrichment
  62. 2026-07-06 16:27 UTCEPSS rescore
  63. 2026-07-06 16:27 UTCEPSS rescore
  64. 2026-07-06 10:14 UTCGHSA enrichment
  65. 2026-07-06 02:23 UTCEPSS rescore
  66. 2026-07-06 02:23 UTCEPSS rescore
  67. 2026-07-05 21:22 UTCGHSA enrichment
  68. 2026-07-05 08:32 UTCGHSA enrichment
  69. 2026-07-05 02:31 UTCEPSS rescore
  70. 2026-07-05 02:30 UTCEPSS rescore
  71. 2026-07-04 19:43 UTCGHSA enrichment
  72. 2026-07-04 06:53 UTCGHSA enrichment
  73. 2026-07-04 06:31 UTCEPSS rescore
  74. 2026-07-04 06:31 UTCEPSS rescore
  75. 2026-07-03 18:04 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54408?
CVE-2026-54408 is a critical vulnerability published on July 2, 2026. A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi Protect Application to bypass authentication for data streaming.
When was CVE-2026-54408 disclosed?
CVE-2026-54408 was first published in the National Vulnerability Database on July 2, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54408 actively exploited?
CVE-2026-54408 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.8% of all scored CVEs.
What is the CVSS score of CVE-2026-54408?
CVE-2026-54408 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-54408?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54408, 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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