CVE-2026-50502

HIGHNVD 8.88.0▼
EchelonGraph scoreHIGH confidence

Score 8.0 from GitHub Security Advisory (severity: HIGH) published 2026-07-14. the CNA's CVSS baseline 8.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 5 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 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
8.0(high)
EPSS
45.7%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 22, 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 / 28× 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.

  1. 2026-07-22 14:52 UTCNVD updateCVSS v3 → 8.8
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 03:06 UTCEG score recompute
  8. 2026-07-19 03:06 UTCVendor advisory
  9. 2026-07-19 03:05 UTCGHSA enrichment
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 07:50 UTCEG score recompute
  13. 2026-07-17 07:50 UTCVendor advisory
  14. 2026-07-17 07:50 UTCGHSA enrichment
  15. 2026-07-16 18:50 UTCVendor advisory
  16. 2026-07-16 18:50 UTCGHSA enrichment
  17. 2026-07-16 17:03 UTCEPSS rescore
  18. 2026-07-16 06:36 UTCVendor advisory
  19. 2026-07-16 06:36 UTCGHSA enrichment
  20. 2026-07-15 18:16 UTCVendor advisory
  21. 2026-07-15 18:16 UTCGHSA enrichment
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 06:02 UTCVendor advisory
  25. 2026-07-15 06:02 UTCGHSA enrichment
Show 3 more
  1. 2026-07-14 17:46 UTCEG score recompute
  2. 2026-07-14 17:46 UTCVendor advisory
  3. 2026-07-14 17:40 UTCMITRE cvelistV5first tracked

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 July 22, 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 45.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50502?
CVE-2026-50502 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.0.
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

Explore the affected products and dependency analysis for CVE-2026-50502

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