#VU102615 Use-after-free in Windows and Windows Server - CVE-2025-21335

Cybersecurity Help s.r.o.

Published: 2025-01-14

Vulnerability identifier: #VU102615

Vulnerability risk: High

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2025-21335

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in Windows Hyper-V NT Kernel Integration VSP component. A local user can execute arbitrary code with SYSTEM privileges.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 21H2 10.0.19041.3920, 10 21H2 10.0.19043.4529, 10 21H2 10.0.19044.1147, 10 21H2 10.0.19044.1149, 10 21H2 10.0.19044.1151, 10 21H2 10.0.19044.1165, 10 21H2 10.0.19044.1200, 10 21H2 10.0.19044.1202 - 10 21H2 10.0.19044.4894, 10 21H2 10.0.19044.1237 - 10 22H2 10.0.19045.2075, 10 21H2 10.0.19044.1263, 10 21H2 10.0.19044.1266, 10 21H2 10.0.19044.1288, 10 21H2 10.0.19044.1319, 10 21H2 10.0.19044.1320, 10 21H2 10.0.19044.1348, 10 21H2 10.0.19044.1379, 10 21H2 10.0.19044.1381, 10 21H2 10.0.19044.1387, 10 21H2 10.0.19044.1415, 10 21H2 10.0.19044.1466, 10 21H2 10.0.19044.1469, 10 21H2 10.0.19044.1499, 10 21H2 10.0.19044.1503, 10 21H2 10.0.19044.1526, 10 21H2 10.0.19044.1566, 10 21H2 10.0.19044.1586, 10 21H2 10.0.19044.1618, 10 21H2 10.0.19044.1620, 10 21H2 10.0.19044.1645, 10 21H2 10.0.19044.1679, 10 21H2 10.0.19044.1682, 10 21H2 10.0.19044.1706, 10 21H2 10.0.19044.1708, 10 21H2 10.0.19044.1737, 10 21H2 10.0.19044.1739, 10 21H2 10.0.19044.1741, 10 21H2 10.0.19044.1766, 10 21H2 10.0.19044.1767, 10 21H2 10.0.19044.1806, 10 21H2 10.0.19044.1826, 10 21H2 10.0.19044.1862, 10 21H2 10.0.19044.1865, 10 21H2 10.0.19044.1889, 10 21H2 10.0.19044.1947, 10 21H2 10.0.19044.1949, 10 21H2 10.0.19044.2006, 10 21H2 10.0.19044.2075, 10 21H2 10.0.19044.2130, 10 21H2 10.0.19044.2132, 10 21H2 10.0.19044.2192, 10 21H2 10.0.19044.2193, 10 21H2 10.0.19044.2194, 10 21H2 10.0.19044.2251, 10 21H2 10.0.19044.2311, 10 21H2 10.0.19044.2364, 10 21H2 10.0.19044.2486, 10 21H2 10.0.19044.2545, 10 21H2 10.0.19044.2546, 10 21H2 10.0.19044.2604, 10 21H2 10.0.19044.2673, 10 21H2 10.0.19044.2728, 10 21H2 10.0.19044.2788, 10 21H2 10.0.19044.2846, 10 21H2 10.0.19044.2965, 10 21H2 10.0.19044.3086, 10 21H2 10.0.19044.3208, 10 21H2 10.0.19044.3324, 10 21H2 10.0.19044.3448, 10 21H2 10.0.19044.3570, 10 21H2 10.0.19044.3693, 10 22H2 10.0.19045.2130, 10 22H2 10.0.19045.2132, 10 22H2 10.0.19045.2193, 10 22H2 10.0.19045.2194, 10 22H2 10.0.19045.2251, 10 22H2 10.0.19045.2301, 10 22H2 10.0.19045.2311, 10 22H2 10.0.19045.2364, 10 22H2 10.0.19045.2486, 10 22H2 10.0.19045.2546, 10 22H2 10.0.19045.2604, 10 22H2 10.0.19045.2670, 10 22H2 10.0.19045.2673, 10 22H2 10.0.19045.2728, 10 22H2 10.0.19045.2787, 10 22H2 10.0.19045.2788, 10 22H2 10.0.19045.2846, 10 22H2 10.0.19045.2908, 10 22H2 10.0.19045.2913, 10 22H2 10.0.19045.2965, 10 22H2 10.0.19045.3030, 10 22H2 10.0.19045.3031, 10 22H2 10.0.19045.3086, 10 22H2 10.0.19045.3154, 10 22H2 10.0.19045.3155, 10 22H2 10.0.19045.3208, 10 22H2 10.0.19045.3269, 10 22H2 10.0.19045.3271, 10 22H2 10.0.19045.3324, 10 22H2 10.0.19045.3391, 10 22H2 10.0.19045.3393, 10 22H2 10.0.19045.3448, 10 22H2 10.0.19045.3513, 10 22H2 10.0.19045.3516, 10 22H2 10.0.19045.3570, 10 22H2 10.0.19045.3636, 10 22H2 10.0.19045.3693, 10 22H2 10.0.19045.3754, 10 22H2 10.0.19045.3757, 10 22H2 10.0.19045.3758, 10 22H2 10.0.19045.3803, 10 22H2 10.0.19045.3930, 10 22H2 10.0.19045.3992, 10 22H2 10.0.19045.3996, 10 22H2 10.0.19045.4046, 10 22H2 10.0.19045.4116, 10 22H2 10.0.19045.4123, 10 22H2 10.0.19045.4170, 10 22H2 10.0.19045.4233, 10 22H2 10.0.19045.4235, 10 22H2 10.0.19045.4239, 10 22H2 10.0.19045.4291, 10 22H2 10.0.19045.4353, 10 22H2 10.0.19045.4355, 10 22H2 10.0.19045.4412, 10 22H2 10.0.19045.4472, 10 22H2 10.0.19045.4474, 10 22H2 10.0.19045.4529, 10 22H2 10.0.19045.4593, 10 22H2 10.0.19045.4598, 10 22H2 10.0.19045.4651, 10 22H2 10.0.19045.4713, 10 22H2 10.0.19045.4717, 10 22H2 10.0.19045.4780, 10 22H2 10.0.19045.4842, 10 22H2 10.0.19045.4894, 10 22H2 10.0.19045.4955, 10 22H2 10.0.19045.4957, 10 22H2 10.0.19045.5011, 10 22H2 10.0.19045.5070, 10 22H2 10.0.19045.5073, 10 22H2 10.0.19045.5131, 10 22H2 10.0.19045.5247, 11 22H2 10.0.22449.1000, 11 22H2 10.0.22454.1000, 11 22H2 10.0.22458.1000, 11 22H2 10.0.22463.1000, 11 22H2 10.0.22468.1000, 11 22H2 10.0.22471.1000, 11 22H2 10.0.22478.1000, 11 22H2 10.0.22478.1012, 11 22H2 10.0.22483.1000, 11 22H2 10.0.22483.1011, 11 22H2 10.0.22489.1000, 11 22H2 10.0.22494.1000, 11 22H2 10.0.22499.1000, 11 22H2 10.0.22499.1010, 11 22H2 10.0.22504.1000, 11 22H2 10.0.22504.1010, 11 22H2 10.0.22509.1000, 11 22H2 10.0.22509.1011, 11 22H2 10.0.22518.1000, 11 22H2 10.0.22518.1012, 11 22H2 10.0.22523.1000, 11 22H2 10.0.22526.1000, 11 22H2 10.0.22533.1001, 11 22H2 10.0.22538.1000, 11 22H2 10.0.22538.1010, 11 22H2 10.0.22543.1000, 11 22H2 10.0.22557.1, 11 22H2 10.0.22563.1, 11 22H2 10.0.22567.1, 11 22H2 10.0.22567.100, 11 22H2 10.0.22567.200, 11 22H2 10.0.22572.1, 11 22H2 10.0.22572.100, 11 22H2 10.0.22572.201, 11 22H2 10.0.22579.1, 11 22H2 10.0.22579.100, 11 22H2 10.0.22581.1, 11 22H2 10.0.22581.100, 11 22H2 10.0.22581.200, 11 22H2 10.0.22593.1, 11 22H2 10.0.22598.1, 11 22H2 10.0.22598.100, 11 22H2 10.0.22598.200, 11 22H2 10.0.22610.1, 11 22H2 10.0.22616.1, 11 22H2 10.0.22616.100, 11 22H2 10.0.22621.1, 11 22H2 10.0.22621.105, 11 22H2 10.0.22621.160, 11 22H2 10.0.22621.169, 11 22H2 10.0.22621.232, 11 22H2 10.0.22621.290, 11 22H2 10.0.22621.317, 11 22H2 10.0.22621.382, 11 22H2 10.0.22621.436, 11 22H2 10.0.22621.440, 11 22H2 10.0.22621.450, 11 22H2 10.0.22621.457, 11 22H2 10.0.22621.521, 11 22H2 10.0.22621.525, 11 22H2 10.0.22621.575, 11 22H2 10.0.22621.586, 11 22H2 10.0.22621.590, 11 22H2 10.0.22621.598, 11 22H2 10.0.22621.601, 11 22H2 10.0.22621.607, 11 22H2 10.0.22621.608, 11 22H2 10.0.22621.674, 11 22H2 10.0.22621.675, 11 22H2 10.0.22621.730, 11 22H2 10.0.22621.741, 11 22H2 10.0.22621.746, 11 22H2 10.0.22621.754, 11 22H2 10.0.22621.755, 11 22H2 10.0.22621.819, 11 22H2 10.0.22621.870, 11 22H2 10.0.22621.875, 11 22H2 10.0.22621.885, 11 22H2 10.0.22621.891, 11 22H2 10.0.22621.898, 11 22H2 10.0.22621.900, 11 22H2 10.0.22621.963, 11 22H2 10.0.22621.1020, 11 22H2 10.0.22621.1028, 11 22H2 10.0.22621.1037, 11 22H2 10.0.22621.1095, 11 22H2 10.0.22621.1105, 11 22H2 10.0.22621.1180, 11 22H2 10.0.22621.1192, 11 22H2 10.0.22621.1194, 11 22H2 10.0.22621.1245, 11 22H2 10.0.22621.1250, 11 22H2 10.0.22621.1255, 11 22H2 10.0.22621.1265, 11 22H2 10.0.22621.1325, 11 22H2 10.0.22621.1343, 11 22H2 10.0.22621.1344, 11 22H2 10.0.22621.1391, 11 22H2 10.0.22621.1413, 11 22H2 10.0.22621.1465, 11 22H2 10.0.22621.1470, 11 22H2 10.0.22621.1483, 11 22H2 10.0.22621.1485, 11 22H2 10.0.22621.1537, 11 22H2 10.0.22621.1546, 11 22H2 10.0.22621.1555, 11 22H2 10.0.22621.1610, 11 22H2 10.0.22621.1616, 11 22H2 10.0.22621.1631, 11 22H2 10.0.22621.1635, 11 22H2 10.0.22621.1680, 11 22H2 10.0.22621.1690, 11 22H2 10.0.22621.1702, 11 22H2 10.0.22621.1755, 11 22H2 10.0.22621.1776, 11 22H2 10.0.22621.1778, 11 22H2 10.0.22621.1825, 11 22H2 10.0.22621.1830, 11 22H2 10.0.22621.1835, 11 22H2 10.0.22621.1848, 11 22H2 10.0.22621.1900, 11 22H2 10.0.22621.1906, 11 22H2 10.0.22621.1926, 11 22H2 10.0.22621.1928, 11 22H2 10.0.22621.1972, 11 22H2 10.0.22621.1992, 11 22H2 10.0.22621.2048, 11 22H2 10.0.22621.2050, 11 22H2 10.0.22621.2066, 11 22H2 10.0.22621.2070, 11 22H2 10.0.22621.2115, 11 22H2 10.0.22621.2129, 11 22H2 10.0.22621.2134, 11 22H2 10.0.22621.2191, 11 22H2 10.0.22621.2199, 11 22H2 10.0.22621.2213, 11 22H2 10.0.22621.2215, 11 22H2 10.0.22621.2262, 11 22H2 10.0.22621.2265, 11 22H2 10.0.22621.2271, 11 22H2 10.0.22621.2283, 11 22H2 10.0.22621.2338, 11 22H2 10.0.22621.2359, 11 22H2 10.0.22621.2361, 11 22H2 10.0.22621.2428, 11 22H2 10.0.22621.2500, 11 22H2 10.0.22621.2506, 11 22H2 10.0.22621.2715, 11 22H2 10.0.22621.2787, 11 22H2 10.0.22621.2792, 11 22H2 10.0.22621.2861, 11 22H2 10.0.22621.3007, 11 22H2 10.0.22621.3078, 11 22H2 10.0.22621.3085, 11 22H2 10.0.22621.3155, 11 22H2 10.0.22621.3227, 11 22H2 10.0.22621.3235, 11 22H2 10.0.22621.3296, 11 22H2 10.0.22621.3371, 11 22H2 10.0.22621.3374, 11 22H2 10.0.22621.3447, 11 22H2 10.0.22621.3520, 11 22H2 10.0.22621.3527, 11 22H2 10.0.22621.3593, 11 22H2 10.0.22621.3668, 11 22H2 10.0.22621.3672, 11 22H2 10.0.22621.3737, 11 22H2 10.0.22621.3807, 11 22H2 10.0.22621.3810, 11 22H2 10.0.22621.3880, 11 22H2 10.0.22621.3951, 11 22H2 10.0.22621.3958, 11 22H2 10.0.22621.4037, 11 22H2 10.0.22621.4108, 11 22H2 10.0.22621.4112, 11 22H2 10.0.22621.4169, 11 22H2 10.0.22621.4247, 11 22H2 10.0.22621.4249, 11 22H2 10.0.22621.4317, 11 22H2 10.0.22621.4391, 11 22H2 10.0.22621.4460, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.1825, 11 23H2 10.0.22631.1830, 11 23H2 10.0.22631.1835, 11 23H2 10.0.22631.1900, 11 23H2 10.0.22631.1906, 11 23H2 10.0.22631.1972, 11 23H2 10.0.22631.2048, 11 23H2 10.0.22631.2050, 11 23H2 10.0.22631.2115, 11 23H2 10.0.22631.2129, 11 23H2 10.0.22631.2191, 11 23H2 10.0.22631.2199, 11 23H2 10.0.22631.2262, 11 23H2 10.0.22631.2265, 11 23H2 10.0.22631.2271, 11 23H2 10.0.22631.2338, 11 23H2 10.0.22631.2361, 11 23H2 10.0.22631.2428, 11 23H2 10.0.22631.2506, 11 23H2 10.0.22631.2715, 11 23H2 10.0.22631.2787, 11 23H2 10.0.22631.2792, 11 23H2 10.0.22631.2861, 11 23H2 10.0.22631.3007, 11 23H2 10.0.22631.3078, 11 23H2 10.0.22631.3085, 11 23H2 10.0.22631.3155, 11 23H2 10.0.22631.3227, 11 23H2 10.0.22631.3235, 11 23H2 10.0.22631.3296, 11 23H2 10.0.22631.3371, 11 23H2 10.0.22631.3374, 11 23H2 10.0.22631.3447, 11 23H2 10.0.22631.3520, 11 23H2 10.0.22631.3527, 11 23H2 10.0.22631.3593, 11 23H2 10.0.22631.3668, 11 23H2 10.0.22631.3672, 11 23H2 10.0.22631.3737, 11 23H2 10.0.22631.3807, 11 23H2 10.0.22631.3810, 11 23H2 10.0.22631.3880, 11 23H2 10.0.22631.3951, 11 23H2 10.0.22631.3958, 11 23H2 10.0.22631.4037, 11 23H2 10.0.22631.4108, 11 23H2 10.0.22631.4112, 11 23H2 10.0.22631.4169, 11 23H2 10.0.22631.4247, 11 23H2 10.0.22631.4249, 11 23H2 10.0.22631.4317, 11 23H2 10.0.22631.4387, 11 23H2 10.0.22631.4391, 11 23H2 10.0.22631.4460, 11 23H2 10.0.22631.4602, 11 24H2 10.0.26052.1000, 11 24H2 10.0.26052.1100, 11 24H2 10.0.26058.1000, 11 24H2 10.0.26058.1100, 11 24H2 10.0.26058.1300, 11 24H2 10.0.26058.1400, 11 24H2 10.0.26063.1, 11 24H2 10.0.26080.1, 11 24H2 10.0.26080.1100, 11 24H2 10.0.26080.1201, 11 24H2 10.0.26080.1300, 11 24H2 10.0.26080.1400, 11 24H2 10.0.26085.1, 11 24H2 10.0.26090.1, 11 24H2 10.0.26090.112, 11 24H2 10.0.26100.1, 11 24H2 10.0.26100.268, 11 24H2 10.0.26100.560, 11 24H2 10.0.26100.712, 11 24H2 10.0.26100.863, 11 24H2 10.0.26100.994, 11 24H2 10.0.26100.1000, 11 24H2 10.0.26100.1150, 11 24H2 10.0.26100.1297, 11 24H2 10.0.26100.1301, 11 24H2 10.0.26100.1457, 11 24H2 10.0.26100.1586, 11 24H2 10.0.26100.1591, 11 24H2 10.0.26100.1742, 11 24H2 10.0.26100.1876, 11 24H2 10.0.26100.1882, 11 24H2 10.0.26100.2033, 11 24H2 10.0.26100.2152, 11 24H2 10.0.26100.2161, 11 24H2 10.0.26100.2240, 11 24H2 10.0.26100.2314, 11 24H2 10.0.26100.2528, 11 24H2 10.0.26100.2605, 11 24H2 10.0.26100.2894

Windows Server: 2016 10.0.14393.10, 2016 10.0.14393.51, 2016 10.0.14393.82, 2016 10.0.14393.105, 2016 10.0.14393.187, 2016 10.0.14393.222, 2016 10.0.14393.321, 2016 10.0.14393.351, 2016 10.0.14393.447, 2016 10.0.14393.479, 2016 10.0.14393.576, 2016 10.0.14393.693, 2016 10.0.14393.953, 2016 10.0.14393.969, 2016 10.0.14393.1066, 2016 10.0.14393.1198, 2016 10.0.14393.1358, 2016 10.0.14393.1378, 2016 10.0.14393.1480, 2016 10.0.14393.1532, 2016 10.0.14393.1537, 2016 10.0.14393.1593, 2016 10.0.14393.1613, 2016 10.0.14393.1670, 2016 10.0.14393.1715, 2016 10.0.14393.1737, 2016 10.0.14393.1770, 2016 10.0.14393.1794, 2016 10.0.14393.1797, 2016 10.0.14393.1884, 2016 10.0.14393.1914, 2016 10.0.14393.1944, 2016 10.0.14393.2007, 2016 10.0.14393.2035, 2016 10.0.14393.2068, 2016 10.0.14393.2097, 2016 10.0.14393.2125, 2016 10.0.14393.2155, 2016 10.0.14393.2156, 2016 10.0.14393.2189, 2016 10.0.14393.2214, 2016 10.0.14393.2248, 2016 10.0.14393.2273, 2016 10.0.14393.2312, 2016 10.0.14393.2339, 2016 10.0.14393.2363, 2016 10.0.14393.2368, 2016 10.0.14393.2395, 2016 10.0.14393.2396, 2016 10.0.14393.2430, 2016 10.0.14393.2457, 2016 10.0.14393.2485, 2016 10.0.14393.2515, 2016 10.0.14393.2551, 2016 10.0.14393.2580, 2016 10.0.14393.2608, 2016 10.0.14393.2639, 2016 10.0.14393.2641, 2016 10.0.14393.2665, 2016 10.0.14393.2670, 2016 10.0.14393.2724, 2016 10.0.14393.2759, 2016 10.0.14393.2791, 2016 10.0.14393.2828, 2016 10.0.14393.2848, 2016 10.0.14393.2879, 2016 10.0.14393.2906, 2016 10.0.14393.2908, 2016 10.0.14393.2941, 2016 10.0.14393.2969, 2016 10.0.14393.2972, 2016 10.0.14393.2999, 2016 10.0.14393.3025, 2016 10.0.14393.3053, 2016 10.0.14393.3056, 2016 10.0.14393.3085, 2016 10.0.14393.3115, 2016 10.0.14393.3144, 2016 10.0.14393.3181, 2016 10.0.14393.3204, 2016 10.0.14393.3206, 2016 10.0.14393.3242, 2016 10.0.14393.3243, 2016 10.0.14393.3274, 2016 10.0.14393.3300, 2016 10.0.14393.3326, 2016 10.0.14393.3384, 2016 10.0.14393.3443, 2016 10.0.14393.3474, 2016 10.0.14393.3504, 2016 10.0.14393.3542, 2016 10.0.14393.3564, 2016 10.0.14393.3595, 2016 10.0.14393.3630, 2016 10.0.14393.3659, 2016 10.0.14393.3686, 2016 10.0.14393.3750, 2016 10.0.14393.3755, 2016 10.0.14393.3808, 2016 10.0.14393.3866, 2016 10.0.14393.3930, 2016 10.0.14393.3986, 2016 10.0.14393.4046, 2016 10.0.14393.4048, 2016 10.0.14393.4104, 2016 10.0.14393.4169, 2016 10.0.14393.4225, 2016 10.0.14393.4283, 2016 10.0.14393.4288, 2016 10.0.14393.4350, 2016 10.0.14393.4402, 2016 10.0.14393.4467, 2016 10.0.14393.4470, 2016 10.0.14393.4530, 2016 10.0.14393.4532, 2016 10.0.14393.4583, 2016 10.0.14393.4651, 2016 10.0.14393.4704, 2016 10.0.14393.4770, 2016 10.0.14393.4771, 2016 10.0.14393.4825, 2016 10.0.14393.4827, 2016 10.0.14393.4886, 2016 10.0.14393.4889, 2016 10.0.14393.4946, 2016 10.0.14393.5006, 2016 10.0.14393.5066, 2016 10.0.14393.5125, 2016 10.0.14393.5127, 2016 10.0.14393.5192, 2016 10.0.14393.5246, 2016 10.0.14393.5291, 2016 10.0.14393.5356, 2016 10.0.14393.5427, 2016 10.0.14393.5429, 2016 10.0.14393.5501, 2016 10.0.14393.5502, 2016 10.0.14393.5582, 2016 10.0.14393.5648, 2016 10.0.14393.5717, 2016 10.0.14393.5786, 2016 10.0.14393.5850, 2016 10.0.14393.5921, 2016 10.0.14393.5989, 2016 10.0.14393.5996, 2016 10.0.14393.6085, 2016 10.0.14393.6167, 2016 10.0.14393.6252, 2016 10.0.14393.6351, 2016 10.0.14393.6452, 2016 10.0.14393.6529, 2016 10.0.14393.6614, 2016 10.0.14393.6709, 2016 10.0.14393.6796, 2016 10.0.14393.6800, 2016 10.0.14393.6897, 2016 10.0.14393.6981, 2016 10.0.14393.7070, 2016 10.0.14393.7159, 2016 10.0.14393.7259, 2016 10.0.14393.7336, 2016 10.0.14393.7428, 2016 10.0.14393.7515, 2016 10.0.14393.7606, 2016 10.0.14393.7699, 2022 23H2 10.0.25398.887, 2022 23H2 10.0.25398.1009, 2022 23H2 10.0.25398.1128, 2022 23H2 10.0.25398.1189, 2022 23H2 10.0.25398.1251, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.1742, 2025 10.0.26100.2240, 2025 10.0.26100.2314, 2025 10.0.26100.2528, 2025 10.0.26100.2605

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21335

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

Latest bulletins with this vulnerability

Multiple privilege escalation vulnerabilities in Microsoft Windows Hyper-V NT Kernel Integration VSP