Login Request a demo
High severity · published Aug 12, 2025
CVE-2025-53778
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network
8.8
CVSS
51.5%
EPSS
No
On KEV
Description
Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)51.5% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
W1
Windows 10 1507 · Microsoft
before 10.0.10240.21100; before 10.0.10240.21100 · source: NVD
W1
Windows 10 1607 · Microsoft
before 10.0.14393.8330; before 10.0.14393.8330 · source: NVD
W1
Windows 10 1809 · Microsoft
before 10.0.17763.7678; before 10.0.17763.7678 · source: NVD
W1
Windows 10 21h2 · Microsoft
before 10.0.19044.6216 · source: NVD
W1
Windows 10 22h2 · Microsoft
before 10.0.19045.6216 · source: NVD
W1
Windows 11 22h2 · Microsoft
before 10.0.22621.5768 · source: NVD
W1
Windows 11 23h2 · Microsoft
before 10.0.22631.5768 · source: NVD
W1
Windows 11 24h2 · Microsoft
before 10.0.26100.4851 · source: NVD
WS
Windows Server 2008 · Microsoft
r2 · source: NVD
WS
Windows Server 2012 · Microsoft
r2 · source: NVD
WS
Windows Server 2016 · Microsoft
before 10.0.14393.8330 · source: NVD
WS
Windows Server 2019 · Microsoft
before 10.0.17763.7678 · source: NVD
Affected product
W1
Windows 10 1507
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-53778
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-53778
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53778
www.vicarius.io
https://www.vicarius.io/vsociety/posts/cve-2025-53778-detection-script-improper-authentication-vulnerability-affecting-windows-ntlm
www.vicarius.io
https://www.vicarius.io/vsociety/posts/cve-2025-53778-mitigation-script-improper-authentication-vulnerability-affecting-windows-ntlm
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