CVE-2026-20925
NTLM Hash Disclosure Spoofing Vulnerability
6.5
MEDIUM
CVSS 3.1
EPSS 17.9% · 97th pctCWE-73
2026-01-13Updated 2026-07-30
Description
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
Severity
CVSS 3.1 · CNA6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CSSVC · CISA-ADP
Exploitationnone
Automatableno
Technical impactpartial
Exploitation Context
as of October 15, 2026- Its current EPSS score (17.9%) is higher than that of 33% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Windows 10 Version 1607 | 10.0.14393.0 to <10.0.14393.8783 |
| Microsoft | Microsoft Windows 10 Version 1809 | 10.0.17763.0 to <10.0.17763.8276 |
| Microsoft | Microsoft Windows 10 Version 21H2 | 10.0.19044.0 to <10.0.19044.6809 |
| Microsoft | Microsoft Windows 10 Version 22H2 | 10.0.19045.0 to <10.0.19045.6809 |
| Microsoft | Microsoft Windows 11 version 23H2 | 10.0.22631.0 to <10.0.22631.6491 |
| Microsoft | Microsoft Windows 11 Version 23H2 | 10.0.22631.0 to <10.0.22631.6491 |
| Microsoft | Microsoft Windows 11 Version 24H2 | 10.0.26100.0 to <10.0.26100.7623 |
| Microsoft | Microsoft Windows 11 Version 25H2 | 10.0.26200.0 to <10.0.26200.7623 |
| Microsoft | Microsoft Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 to <6.1.7601.28117 |
| Microsoft | Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 to <6.1.7601.28117 |
| Microsoft | Microsoft Windows Server 2008 Service Pack 2 | 6.0.6003.0 to <6.0.6003.23717 |
| Microsoft | Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 to <6.0.6003.23717 |
| Microsoft | Microsoft Windows Server 2012 | 6.2.9200.0 to <6.2.9200.25868 |
| Microsoft | Microsoft Windows Server 2012 (Server Core installation) | 6.2.9200.0 to <6.2.9200.25868 |
| Microsoft | Microsoft Windows Server 2012 R2 | 6.3.9600.0 to <6.3.9600.22968 |
| Microsoft | Microsoft Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 to <6.3.9600.22968 |
| Microsoft | Microsoft Windows Server 2016 | 10.0.14393.0 to <10.0.14393.8783 |
| Microsoft | Microsoft Windows Server 2016 (Server Core installation) | 10.0.14393.0 to <10.0.14393.8783 |
| Microsoft | Microsoft Windows Server 2019 | 10.0.17763.0 to <10.0.17763.8276 |
| Microsoft | Microsoft Windows Server 2019 (Server Core installation) | 10.0.17763.0 to <10.0.17763.8276 |
| Microsoft | Microsoft Windows Server 2022 | 10.0.20348.0 to <10.0.20348.4648 |
| Microsoft | Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 to <10.0.25398.2092 |
| Microsoft | Microsoft Windows Server 2025 | 10.0.26100.0 to <10.0.26100.32230 |
| Microsoft | Microsoft Windows Server 2025 (Server Core installation) | 10.0.26100.0 to <10.0.26100.32230 |
References
1 LinksVendor advisories
Record Details
Published
2026-01-13
Last updated
2026-07-30
Assigner (CNA)
microsoft
Credited to
-
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Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.