CVE-2026-69380

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 24, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69380

Vendor Advisories for CVE-2026-69380(2)

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 49× in last 7d / 125× 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 125 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-69380?
CVE-2026-69380 is a high vulnerability published on September 8, 2026. Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
When was CVE-2026-69380 disclosed?
CVE-2026-69380 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-69380 actively exploited?
CVE-2026-69380 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 48.8% of all scored CVEs.
What is the CVSS score of CVE-2026-69380?
CVE-2026-69380 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-69380?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-69380, 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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