CVE-2026-50308

HighCVSS 7.8/10Last modified Jul 22, 2026

Description

Integer underflow (wrap or wraparound) in Windows NTFS allows an unauthorized attacker to execute code locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122 CWE-191

Affected software

Vendor	Product	Versions
Microsoft	Windows 10 Version 1607	>= 10.0.14393.0, < 10.0.14393.9339
Microsoft	Windows 10 Version 1809	>= 10.0.17763.0, < 10.0.17763.9020
Microsoft	Windows 10 Version 21H2	>= 10.0.19044.0, < 10.0.19044.7548
Microsoft	Windows 10 Version 22H2	>= 10.0.19045.0, < 10.0.19045.7548
Microsoft	Windows 11 Version 24H2	>= 10.0.26100.0, < 10.0.26100.8875
Microsoft	Windows 11 Version 25H2	>= 10.0.26200.0, < 10.0.26200.8875
Microsoft	Windows 11 version 26H1	>= 10.0.28000.0, < 10.0.28000.2525
Microsoft	Windows Server 2012	>= 6.2.9200.0, < 6.2.9200.26226
Microsoft	Windows Server 2012 (Server Core installation)	>= 6.2.9200.0, < 6.2.9200.26226
Microsoft	Windows Server 2012 R2	>= 6.3.9600.0, < 6.3.9600.23291
Microsoft	Windows Server 2012 R2 (Server Core installation)	>= 6.3.9600.0, < 6.3.9600.23291
Microsoft	Windows Server 2016	>= 10.0.14393.0, < 10.0.14393.9339
Microsoft	Windows Server 2016 (Server Core installation)	>= 10.0.14393.0, < 10.0.14393.9339
Microsoft	Windows Server 2019	>= 10.0.17763.0, < 10.0.17763.9020
Microsoft	Windows Server 2019 (Server Core installation)	>= 10.0.17763.0, < 10.0.17763.9020
Microsoft	Windows Server 2022	>= 10.0.20348.0, < 10.0.20348.5386
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.33158
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.33158

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50308Patch, Vendor Advisory

Timeline

Published: Jul 14, 2026
Last modified: Jul 22, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-503097.8Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.CVE-2026-50314.3A vulnerability was found in BichitroGan ISP Billing Software 2025.3.20. Impacted is an unknown function of the file /?_route=settings/users CVE-2026-503104.7Integer overflow or wraparound in Windows Devices Human Interface allows an authorized attacker to disclose information locally.CVE-2026-503117.8Improper access control in Windows Server allows an authorized attacker to elevate privileges locally.CVE-2026-503127.8Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.CVE-2026-503137.8Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.CVE-2026-503147.8Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.CVE-2026-503157.8Null pointer dereference in Windows Image Acquisition allows an authorized attacker to elevate privileges locally.CVE-2026-503165.5Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.CVE-2026-503177.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Operating Systems allows an authorize CVE-2026-503187.8Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.CVE-2026-50327.5The W3 Total Cache plugin for WordPress is vulnerable to information exposure in all versions up to, and including, 2.9.3. This is due to th