CVE-2026-58539

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 43% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

July 14, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Jul 15, 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-2026-58539

Vendor Advisories for CVE-2026-58539(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 33× in last 7d / 166× 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. 2026-08-30 04:28 UTCEG score recompute
  2. 2026-08-30 04:28 UTCVendor advisory
  3. 2026-08-30 04:28 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 21:20 UTCVendor advisory
  7. 2026-08-28 21:19 UTCGHSA enrichment
  8. 2026-08-27 21:29 UTCEG score recompute
  9. 2026-08-27 21:29 UTCVendor advisory
  10. 2026-08-27 21:29 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 03:39 UTCEG score recompute
  13. 2026-08-27 03:39 UTCVendor advisory
  14. 2026-08-27 03:39 UTCGHSA enrichment
  15. 2026-08-26 14:46 UTCEPSS rescore
  16. 2026-08-26 14:25 UTCGHSA enrichment
  17. 2026-08-26 01:15 UTCEG score recompute
  18. 2026-08-26 01:15 UTCVendor advisory
  19. 2026-08-26 01:15 UTCGHSA enrichment
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-25 10:25 UTCVendor advisory
  22. 2026-08-25 10:25 UTCGHSA enrichment
  23. 2026-08-24 21:19 UTCEG score recompute
  24. 2026-08-24 21:19 UTCVendor advisory
  25. 2026-08-24 21:19 UTCGHSA enrichment
Show 75 more
  1. 2026-08-24 12:51 UTCEG score recompute
  2. 2026-08-24 12:51 UTCVendor advisory
  3. 2026-08-24 12:51 UTCGHSA enrichment
  4. 2026-08-23 23:46 UTCVendor advisory
  5. 2026-08-23 23:46 UTCGHSA enrichment
  6. 2026-08-23 10:42 UTCEG score recompute
  7. 2026-08-23 10:42 UTCVendor advisory
  8. 2026-08-23 10:42 UTCGHSA enrichment
  9. 2026-08-23 00:19 UTCEPSS rescore
  10. 2026-08-22 21:38 UTCVendor advisory
  11. 2026-08-22 21:38 UTCGHSA enrichment
  12. 2026-08-22 08:33 UTCEG score recompute
  13. 2026-08-22 08:33 UTCVendor advisory
  14. 2026-08-22 08:33 UTCGHSA enrichment
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 19:28 UTCGHSA enrichment
  17. 2026-08-21 06:23 UTCEG score recompute
  18. 2026-08-21 06:23 UTCVendor advisory
  19. 2026-08-21 06:23 UTCGHSA enrichment
  20. 2026-08-20 22:55 UTCEPSS rescore
  21. 2026-08-20 17:18 UTCVendor advisory
  22. 2026-08-20 17:18 UTCGHSA enrichment
  23. 2026-08-20 06:06 UTCEG score recompute
  24. 2026-08-20 06:06 UTCGHSA enrichment
  25. 2026-08-19 17:04 UTCEPSS rescore
  26. 2026-08-19 17:01 UTCVendor advisory
  27. 2026-08-19 17:00 UTCGHSA enrichment
  28. 2026-08-19 16:08 UTCVendor advisory
  29. 2026-08-19 16:08 UTCGHSA enrichment
  30. 2026-08-19 06:51 UTCVendor advisory
  31. 2026-08-19 06:51 UTCGHSA enrichment
  32. 2026-08-18 17:34 UTCVendor advisory
  33. 2026-08-18 17:34 UTCGHSA enrichment
  34. 2026-08-18 16:20 UTCEG score recompute
  35. 2026-08-18 16:20 UTCVendor advisory
  36. 2026-08-18 16:20 UTCGHSA enrichment
  37. 2026-08-18 13:48 UTCEPSS rescore
  38. 2026-08-18 07:54 UTCGHSA enrichment
  39. 2026-08-17 18:37 UTCEG score recompute
  40. 2026-08-17 18:37 UTCVendor advisory
  41. 2026-08-17 18:36 UTCGHSA enrichment
  42. 2026-08-17 13:47 UTCEPSS rescore
  43. 2026-08-17 11:47 UTCVendor advisory
  44. 2026-08-17 11:47 UTCGHSA enrichment
  45. 2026-08-16 22:42 UTCEG score recompute
  46. 2026-08-16 22:42 UTCVendor advisory
  47. 2026-08-16 22:42 UTCGHSA enrichment
  48. 2026-08-16 14:56 UTCEPSS rescore
  49. 2026-08-16 09:37 UTCEG score recompute
  50. 2026-08-16 09:37 UTCVendor advisory
  51. 2026-08-16 09:37 UTCGHSA enrichment
  52. 2026-08-16 02:14 UTCEPSS rescore
  53. 2026-08-15 20:33 UTCVendor advisory
  54. 2026-08-15 20:33 UTCGHSA enrichment
  55. 2026-08-15 07:28 UTCEG score recompute
  56. 2026-08-15 07:28 UTCVendor advisory
  57. 2026-08-15 07:28 UTCGHSA enrichment
  58. 2026-08-15 01:30 UTCEPSS rescore
  59. 2026-08-14 17:37 UTCVendor advisory
  60. 2026-08-14 17:37 UTCGHSA enrichment
  61. 2026-08-14 17:13 UTCVendor advisory
  62. 2026-08-14 17:13 UTCGHSA enrichment
  63. 2026-08-14 13:08 UTCVendor advisory
  64. 2026-08-14 13:08 UTCGHSA enrichment
  65. 2026-08-14 00:04 UTCEG score recompute
  66. 2026-08-14 00:04 UTCVendor advisory
  67. 2026-08-14 00:04 UTCGHSA enrichment
  68. 2026-08-13 22:00 UTCEPSS rescore
  69. 2026-08-13 10:59 UTCVendor advisory
  70. 2026-08-13 10:59 UTCGHSA enrichment
  71. 2026-08-12 21:54 UTCEG score recompute
  72. 2026-08-12 21:54 UTCGHSA enrichment
  73. 2026-08-12 13:51 UTCEPSS rescore
  74. 2026-08-12 08:50 UTCVendor advisory
  75. 2026-08-12 08:50 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58539?
CVE-2026-58539 is a high vulnerability published on July 14, 2026. Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-58539 disclosed?
CVE-2026-58539 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58539 actively exploited?
CVE-2026-58539 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 42.7% of all scored CVEs.
What is the CVSS score of CVE-2026-58539?
CVE-2026-58539 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-58539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58539, 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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