CVE-2026-54401

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 64% 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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 and low privileges could exploit a Server-Side Request Forgery (SSRF) to escalate privileges within such UniFi OS devices or instances.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 3, 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-2026-54401(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 9× in last 7d / 71× 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 206 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-54401?
CVE-2026-54401 is a high vulnerability published on July 2, 2026. A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) to escalate privileges within such UniFi OS devices or instances.
When was CVE-2026-54401 disclosed?
CVE-2026-54401 was first published in the National Vulnerability Database on July 2, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54401 actively exploited?
CVE-2026-54401 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 63.7% of all scored CVEs.
What is the CVSS score of CVE-2026-54401?
CVE-2026-54401 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-54401?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54401, 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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