CVE-2026-50502

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

July 14, 2026

Last Modified

September 17, 2026

Advisory Details (1)

Auto-updated Jul 14, 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-2026-50502

Vendor Advisories for CVE-2026-50502(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 19× in last 7d / 110× 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 302 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-50502?
CVE-2026-50502 is a high vulnerability published on July 14, 2026. Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.
When was CVE-2026-50502 disclosed?
CVE-2026-50502 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50502 actively exploited?
CVE-2026-50502 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-2026-50502?
CVE-2026-50502 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-50502?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50502, 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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