CVE-2026-71340

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. the CNA's CVSS baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

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

Use after free in Windows File History Service allows an authorized attacker to elevate privileges locally.

CVSS v3
7.0
EG Score
7.0(high)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
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-2026-71340

Vendor Advisories for CVE-2026-71340(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 48× in last 7d / 130× 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 130 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71340?
CVE-2026-71340 is a high vulnerability published on September 8, 2026. Use after free in Windows File History Service allows an authorized attacker to elevate privileges locally.
When was CVE-2026-71340 disclosed?
CVE-2026-71340 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-2026-71340 actively exploited?
CVE-2026-71340 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 83.8% of all scored CVEs.
What is the CVSS score of CVE-2026-71340?
CVE-2026-71340 has a CVSS v4.0 base score of 7.0 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-71340?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71340, 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-2026-71340

Explore →

Is Your Infrastructure Affected by CVE-2026-71340?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs