cve 2026 50313

CVE 2026 50313 is a high-severity Windows NTFS vulnerability addressed in Microsoft’s July 14, 2026 security updates. The issue is a heap-based buffer overflow that could allow an unauthenticated attacker to execute code after a user interacts with malicious content. The fix applies to supported Windows 10, Windows 11, and Windows Server releases. Microsoft’s Security Update Guide lists an Important severity rating and a CVSS 3.1 score of 7.8. At release, Microsoft had not identified public disclosure or active exploitation. This tag page covers the vulnerability, its July Patch Tuesday fix, and the recommendation to prioritize deployment across affected systems.