CVE-2026-22557

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-19. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 28%CVSS: 10.0Exploit: Elevated riskExposed: 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 a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
76(Track)
EG Risk 76/100SSVC: 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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
28%
EPSS %ILE
98%
KEV
Not listed

Published

March 19, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic
https://community.ui.com/releases/Security-Advisory-Bulletin-062-062/c29719c0-405e-4d4a-8f26-e343e99f931b

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 21× 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 220 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCThePotatoOfDoom/CVE-2026-22557-PoC
    First seen Apr 11, 2026

    PoC for UniFi Network Application Pre-Auth Path Traversal (CVE-2026-22557)

    Open source ↗
  • GitHub PoC0xBlackash/CVE-2026-22557
    First seen Apr 5, 2026

    CVE-2026-22557

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-22557.yaml
    First seen Jan 1, 2026

    UniFi Network Application - Path Traversal

    Open source ↗

Frequently asked(5)

What is CVE-2026-22557?
CVE-2026-22557 is a critical vulnerability published on March 19, 2026. A malicious actor with access to the network could exploit a Path Traversal vulnerability found in the UniFi Network Application to access files on the underlying system that could be manipulated to access an underlying account.
When was CVE-2026-22557 disclosed?
CVE-2026-22557 was first published in the National Vulnerability Database on March 19, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22557 actively exploited?
CVE-2026-22557 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28% probability of exploitation in the next 30 days, which ranks it in the top 2.0% of all scored CVEs.
What is the CVSS score of CVE-2026-22557?
CVE-2026-22557 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-22557?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22557, 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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