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CVE-2026-84001: Windows Key Distribution Center Denial of Service Vulnerability

highCVSS 7.5CVE-2026-84001
Out-of-bounds read in Windows Key Distribution Center allows an unauthorized attacker to deny service over a network.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.5
Published
2026-09-08
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84001

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-84001coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Key Distribution

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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