VulnIntel

CVE-2026-47291

CVSS 9.8 · CRITICAL
EPSS p90
Higher than 90% of all CVEs — elevated exploitation risk.
Patch available
Vendor advisory or patch linked

Published 6/9/2026 · updated 6/17/2026 · CWE-122, CWE-190

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Summary

Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.

CVSS 9.8 — CRITICAL

9.8 / 10
  • AV: Network
  • AC: Low complexity
  • PR: No privileges
  • UI: No user interaction
  • S: Scope unchanged
  • C: Confidentiality: High
  • I: Integrity: High
  • A: Availability: High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS exploitation probability

4.3%

Percentile p90 — Higher than 90% of all CVEs — elevated exploitation risk.

Affected products

13 vendor/product entries
  • Microsoft Windows 10 1607< 10.0.14393.9234
  • Microsoft Windows 10 1809< 10.0.17763.8880
  • Microsoft Windows 10 21h2< 10.0.19044.7417
  • Microsoft Windows 10 22h2< 10.0.19045.7417
  • Microsoft Windows 11 23h2< 10.0.22631.7219
  • Microsoft Windows 11 24h2< 10.0.26100.8655
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Timeline

  1. Jun 9, 2026 · Disclosed / published in NVD
  2. Jun 17, 2026 · Intel last updated

Intel sources

Which upstream feeds returned data for this CVE, and when they were last fetched.

  • NVD· 42 days ago
  • CVE.org· no data
  • FIRST EPSS· 46 days ago
  • CISA KEV· no data
  • OSV· 46 days ago

References

Vendor & CERT advisories1

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