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CVE-2026-69603: Windows Hyper-V Remote Code Execution Vulnerability

highCVSS 8.8CVE-2026-69603
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.8
Published
2026-09-08
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69603

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-69603coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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