CVE-2026-62820 in Windows

Summary

by MITRE • 08/11/2026

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an unauthorized attacker to execute code over a network.

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• Responsible: Microsoft
• Reservation: 07/14/2026
• Disclosure: 08/11/2026
• Moderation: accepted
• Entry: VDB-388557
• CPE: ready
• CWE: CWE-362 (confirmed)
• CVSS: 10.0 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Energy, Hostingprovider, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-62820
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-62820
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-62820/