CVE-2026-100219 in Windows

Summary

by MITRE • 10/13/2026

Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

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• Responsible: Microsoft
• Reservation: 09/25/2026
• Disclosure: 10/13/2026
• Moderation: accepted
• Entry: VDB-417962
• CPE: 20261013
• CWE: CWE-416 (confirmed)
• CVSS: 9.8 (CNA)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Agriculture, Chemical, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-100219
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-100219
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-100219/