#VU103796 Link following in Windows and Windows Server - CVE-2025-21347

Cybersecurity Help s.r.o.

Published: 2025-02-11

Vulnerability identifier: #VU103796

Vulnerability risk: Low

CVSSv4.0: 0.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-21347

CWE-ID: CWE-59

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 perform a denial of service (DoS) attack.

The vulnerability exists due to insecure link following in Windows Deployment Services. A local user can overwrite files contents and cause a denial of service condition on the target system.

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 - 11 22H2 10.0.22621.4037, 10 21H2 10.0.19044.1237 - 11 24H2 10.0.26100.2161, 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 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10.0.17763.1294, 10 1809 10.0.17763.1339, 10 1809 10.0.17763.1369, 10 1809 10.0.17763.1397, 10 1809 10.0.17763.1432, 10 1809 10.0.17763.1457, 10 1809 10.0.17763.1490, 10 1809 10.0.17763.1518, 10 1809 10.0.17763.1554, 10 1809 10.0.17763.1577, 10 1809 10.0.17763.1579, 10 1809 10.0.17763.1613, 10 1809 10.0.17763.1637, 10 1809 10.0.17763.1697, 10 1809 10.0.17763.1728, 10 1809 10.0.17763.1757, 10 1809 10.0.17763.1790, 10 1809 10.0.17763.1817, 10 1809 10.0.17763.1821, 10 1809 10.0.17763.1823, 10 1809 10.0.17763.1852, 10 1809 10.0.17763.1879, 10 1809 10.0.17763.1911, 10 1809 10.0.17763.1935, 10 1809 10.0.17763.1971, 10 1809 10.0.17763.1999, 10 1809 10.0.17763.2028, 10 1809 10.0.17763.2029, 10 1809 10.0.17763.2061, 10 1809 10.0.17763.2090, 10 1809 10.0.17763.2091, 10 1809 10.0.17763.2114, 10 1809 10.0.17763.2145, 10 1809 10.0.17763.2183, 10 1809 10.0.17763.2213, 10 1809 10.0.17763.2237, 10 1809 10.0.17763.2268, 10 1809 10.0.17763.2300, 10 1809 10.0.17763.2305, 10 1809 10.0.17763.2330, 10 1809 10.0.17763.2366, 10 1809 10.0.17763.2369, 10 1809 10.0.17763.2452, 10 1809 10.0.17763.2458, 10 1809 10.0.17763.2510, 10 1809 10.0.17763.2565, 10 1809 10.0.17763.2628, 10 1809 10.0.17763.2686, 10 1809 10.0.17763.2746, 10 1809 10.0.17763.2803, 10 1809 10.0.17763.2867, 10 1809 10.0.17763.2928, 10 1809 10.0.17763.2931, 10 1809 10.0.17763.2989, 10 1809 10.0.17763.3046, 10 1809 10.0.17763.3113, 10 1809 10.0.17763.3165, 10 1809 10.0.17763.3232, 10 1809 10.0.17763.3287, 10 1809 10.0.17763.3346, 10 1809 10.0.17763.3406, 10 1809 10.0.17763.3469, 10 1809 10.0.17763.3532, 10 1809 10.0.17763.3534, 10 1809 10.0.17763.3650, 10 1809 10.0.17763.3653, 10 1809 10.0.17763.3770, 10 1809 10.0.17763.3772, 10 1809 10.0.17763.3887, 10 1809 10.0.17763.4010, 10 1809 10.0.17763.4131, 10 1809 10.0.17763.4252, 10 1809 10.0.17763.4377, 10 1809 10.0.17763.4499, 10 1809 10.0.17763.4645, 10 1809 10.0.17763.4737, 10 1809 10.0.17763.4851, 10 1809 10.0.17763.4974, 10 1809 10.0.17763.5122, 10 1809 10.0.17763.5206, 10 1809 10.0.17763.5329, 10 1809 10.0.17763.5458, 10 1809 10.0.17763.5576, 10 1809 10.0.17763.5579, 10 1809 10.0.17763.5696, 10 1809 10.0.17763.5820, 10 1809 10.0.17763.5936, 10 1809 10.0.17763.6054, 10 1809 10.0.17763.6189, 10 1809 10.0.17763.6293, 10 1809 10.0.17763.6414, 10 1809 10.0.17763.6532, 10 1809 10.0.17763.6659, 10 1809 10.0.17763.6775, 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 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: 2012 Gold, 2012 R2 6.3.9600.21871, 2012 R2 6.3.9600.21924, 2012 R2 6.3.9600.21972, 2012 R2 6.3.9600.22023, 2012 R2 6.3.9600.22074, 2012 R2 6.3.9600.22134, 2012 R2 6.3.9600.22175, 2012 R2 6.3.9600.22221, 2012 R2 6.3.9600.22267, 2012 R2 6.3.9600.22318, 2012 R2 6.3.9600.22371, 2012 6.2.9200.24768, 2012 6.2.9200.24821, 2012 6.2.9200.24868, 2012 6.2.9200.24919, 2012 6.2.9200.24975, 2012 6.2.9200.25031, 2012 6.2.9200.25073, 2012 6.2.9200.25118, 2012 6.2.9200.25165, 2012 6.2.9200.25222, 2012 6.2.9200.25273, 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 10.0.20348.202, 2022 10.0.20348.230, 2022 10.0.20348.261, 2022 10.0.20348.288, 2022 10.0.20348.320, 2022 10.0.20348.350, 2022 10.0.20348.380, 2022 10.0.20348.405, 2022 10.0.20348.407, 2022 10.0.20348.469, 2022 10.0.20348.473, 2022 10.0.20348.502, 2022 10.0.20348.524, 2022 10.0.20348.558, 2022 10.0.20348.587, 2022 10.0.20348.617, 2022 10.0.20348.643, 2022 10.0.20348.681, 2022 10.0.20348.707, 2022 10.0.20348.709, 2022 10.0.20348.740, 2022 10.0.20348.768, 2022 10.0.20348.803, 2022 10.0.20348.825, 2022 10.0.20348.859, 2022 10.0.20348.887, 2022 10.0.20348.946, 2022 10.0.20348.1006, 2022 10.0.20348.1070, 2022 10.0.20348.1129, 2022 10.0.20348.1131, 2022 10.0.20348.1194, 2022 10.0.20348.1249, 2022 10.0.20348.1251, 2022 10.0.20348.1311, 2022 10.0.20348.1366, 2022 10.0.20348.1368, 2022 10.0.20348.1487, 2022 10.0.20348.1547, 2022 10.0.20348.1607, 2022 10.0.20348.1668, 2022 10.0.20348.1726, 2022 10.0.20348.1787, 2022 10.0.20348.1850, 2022 10.0.20348.1906, 2022 10.0.20348.1970, 2022 10.0.20348.2031, 2022 10.0.20348.2113, 2022 10.0.20348.2159, 2022 10.0.20348.2227, 2022 10.0.20348.2322, 2022 10.0.20348.2333, 2022 10.0.20348.2340, 2022 10.0.20348.2342, 2022 10.0.20348.2402, 2022 10.0.20348.2458, 2022 10.0.20348.2461, 2022 10.0.20348.2522, 2022 10.0.20348.2527, 2022 10.0.20348.2582, 2022 10.0.20348.2655, 2022 10.0.20348.2695, 2022 10.0.20348.2700, 2022 10.0.20348.2762, 2022 10.0.20348.2849, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 10.0.20348.3091, 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, 2022 23H2 10.0.25398.1369, 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, 2025 10.0.26100.2894

External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21347

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?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability

Link following in Microsoft Windows Deployment Services