{"id":"CVE-2025-49721","published":"2025-07-08T16:57:22Z","modified":"2026-02-13T19:06:58Z","title":"Windows Fast FAT File System Driver Elevation of Privilege Vulnerability","vendor":"Microsoft","product":"Windows 10 Version 1507","tier":"tail","description":{"text":"Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to elevate privileges locally.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00557,"percentile":0.46314,"provenance":"source"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49721","tags":["vendor-advisory","patch"]}],"priority":{"score":14.7,"factors":[{"name":"EPSS percentile","points":9.26},{"name":"CVSS severity","points":5.46}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows 10 Version 1507","versions":[">= 10.0.10240.0, < 10.0.10240.21073"]},{"vendor":"Microsoft","product":"Windows 10 Version 1607","versions":[">= 10.0.14393.0, < 10.0.14393.8246"]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.17763.0, < 10.0.17763.7558"]},{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[">= 10.0.19044.0, < 10.0.19044.6093"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[">= 10.0.19045.0, < 10.0.19045.6093"]},{"vendor":"Microsoft","product":"Windows 11 version 22H2","versions":[">= 10.0.22621.0, < 10.0.22621.5624"]},{"vendor":"Microsoft","product":"Windows 11 version 22H3","versions":[">= 10.0.22631.0, < 10.0.22631.5624"]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","versions":[">= 10.0.22631.0, < 10.0.22631.5624"]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[">= 10.0.26100.0, < 10.0.26100.4652"]},{"vendor":"Microsoft","product":"Windows Server 2008 R2 Service Pack 1","versions":[">= 6.1.7601.0, < 6.1.7601.27820"]}],"euvd":{"id":"EUVD-2025-20624","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-122"}}