CVE-2026-45393

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

A vulnerability chain in Cribl Edge for Windows before 4.17.1 allows a local authenticated user to escalate privileges to NT AUTHORITY\SYSTEM. Incorrect default permissions on the Windows installer's authentication directory (CWE-276) expose a cryptographic secret used for JWT signing and password-hash derivation, enabling forgery of administrative API tokens. The forged token can then be used to invoke a pipeline function that reaches an OS command sink (CWE-78) running in the SYSTEM context.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
12.6%
KEV
Not listed

Published

May 12, 2026

Last Modified

June 2, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
No patch confirmed yet.
generic

TrustShare

https://trust.cribl.io/notifications
generic

Cribl Edge 4.17.1 | Cribl Docs

https://docs.cribl.io/edge/release-notes/release-v4171#security-fixes

Vendor Advisories for CVE-2026-45393(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 51× 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 260 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45393?
CVE-2026-45393 is a critical vulnerability published on May 12, 2026. A vulnerability chain in Cribl Edge for Windows before 4.17.1 allows a local authenticated user to escalate privileges to NT AUTHORITY\SYSTEM. Incorrect default permissions on the Windows installer's authentication directory (CWE-276) expose a cryptographic secret used for JWT signing and…
When was CVE-2026-45393 disclosed?
CVE-2026-45393 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45393 actively exploited?
CVE-2026-45393 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45393?
CVE-2026-45393 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-45393?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45393, 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

Explore the affected products and dependency analysis for CVE-2026-45393

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