CVE-2026-59134

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 51% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
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.

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVSS v3
8.1
EG Score
8.1(medium)
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
49%
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-2026-59134

Vendor Advisories for CVE-2026-59134(2)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 36× in last 7d / 170× 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 308 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-59134?
CVE-2026-59134 is a high vulnerability published on August 11, 2026. Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
When was CVE-2026-59134 disclosed?
CVE-2026-59134 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-2026-59134 actively exploited?
CVE-2026-59134 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 51.5% of all scored CVEs.
What is the CVSS score of CVE-2026-59134?
CVE-2026-59134 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-59134?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59134, 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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