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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV
1474Microsoft CVEsreleased Tue 13 Oct 94Critical81 need an update · 13 fixed service-side 1Exploited in the wild
1Publicly disclosed
1In CISA KEV
256Revised since release

September 2026: 998 CVEs · 132 critical · 2 exploited · 2 in CISA KEV

Act first · October 2026

Exploited, KEV-listed, or publicly disclosed
CVSS 8.8 KB5126646KB5126651KB5126653+6
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update183
CVSS 8.1 · EPSS 1.4% KB5128895KB5128896KB5128897+1
CVSS 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

1121 matches in Windows · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-69883 Windows iSCSI Remote Code Execution VulnerabilityWindows iSCSI Important 9.80.9%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-69886 Windows Imaging Component Remote Code Execution VulnerabilityWindows Imaging Component Important 9.80.9%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-70024 Windows Internet Information Services Remote Code Execution VulnerabilityWindows Internet Information Services Important 9.81.0%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-70096 Windows Rich Text Edit Control Remote Code Execution VulnerabilityWindows Rich Text Edit Control Important 9.81.1%RCENetwork Fix has a known issueRevised 15 Oct
KB5126646KB5126651+8
CVE-2026-70157 Windows System Information Console Remote Code Execution VulnerabilityWindows System Information Console Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83517 Microsoft Windows Media Foundation Remote Code Execution VulnerabilityMicrosoft Windows Media Foundation Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83519 Windows Error Reporting Remote Code Execution VulnerabilityWindows Error Reporting Important 9.81.1%RCENetwork Fix has a known issueRevised 26 Oct
KB5126646KB5126651+8
CVE-2026-83578 Microsoft PowerShell Remote Code Execution VulnerabilityWindows PowerShell Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83693 Windows Error Reporting Remote Code Execution VulnerabilityWindows Error Reporting Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83748 Windows Error Reporting Remote Code Execution VulnerabilityWindows Error Reporting Important 9.80.9%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83770 Windows Text Shaping Remote Code Execution VulnerabilityWindows Text Shaping Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83780 Windows CCFFilter Driver Remote Code Execution VulnerabilityWindows CCFFilter Driver Important 9.81.1%RCENetwork Fix has a known issue
KB5126646KB5126651+2

Advisories · October 2026

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 17:32 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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