CVE-2026-65794

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-11. the CNA's CVSS baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: None knownExposed: 0

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

Buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
30(Track)
EG Risk 30/100SSVC: 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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

August 11, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Aug 11, 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-2026-65794

Vendor Advisories for CVE-2026-65794(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 22× in last 7d / 131× 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 241 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-65794?
CVE-2026-65794 is a medium vulnerability published on August 11, 2026. Buffer over-read in Windows SMB Client allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-65794 disclosed?
CVE-2026-65794 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65794 actively exploited?
CVE-2026-65794 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 50.2% of all scored CVEs.
What is the CVSS score of CVE-2026-65794?
CVE-2026-65794 has a CVSS v4.0 base score of 6.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-65794?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65794, 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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