CVE-2026-50300 in Windows

Summary

by MITRE • 07/14/2026

Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to disclose information locally.

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• Responsible: Microsoft
• Reservation: 06/04/2026
• Disclosure: 07/14/2026
• Moderation: accepted
• Entry: VDB-378430
• CPE: ready
• CWE: CWE-191 (confirmed)
• CVSS: 3.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Government, Telecommunication, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-50300
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50300
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-50300/