CVE-2025-53778

Windows NTLM Elevation of Privilege Vulnerability

CVSS 3.1 High 8.8

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Description

Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.

Key data

CVSS 3.1 High 8.8

Score published by microsoft in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: Low
A basic user account is needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: High
Serious or total effect on the trustworthiness of data.
Availability impact: High
Serious or total effect on availability.

Metric	Value	What it means
Attack vector	Network	The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity	Low	No special conditions are needed. The attack can be repeated at will.
Privileges required	Low	A basic user account is needed.
User interaction	None	No action from any user is needed.
Scope	Unchanged	The impact stays within the vulnerable component.
Confidentiality impact	High	Serious or total effect on the secrecy of data.
Integrity impact	High	Serious or total effect on the trustworthiness of data.
Availability impact	High	Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score: 0.51622 (51.6% probability)
Percentile: 99.0%
Scores of: Nov 10, 2026
Model: v2026.06.15

CISA assessment as of Aug 13, 2025

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Automatable: no
Technical impact: total

Weakness (CWE)

CWE catalog version 5.0.

CWE-287Improper Authentication

Affected products

Products listed in the CVE record, as the CNA published them.

Microsoft Windows 10 Version 1507
- affected: 10.0.10240.0 up to before 10.0.10240.21100
Microsoft Windows 10 Version 1607
- affected: 10.0.14393.0 up to before 10.0.14393.8330
Microsoft Windows 10 Version 1809
- affected: 10.0.17763.0 up to before 10.0.17763.7678
Microsoft Windows 10 Version 21H2
- affected: 10.0.19044.0 up to before 10.0.19044.6216
Microsoft Windows 10 Version 22H2
- affected: 10.0.19045.0 up to before 10.0.19045.6216
Microsoft Windows 11 version 22H2
- affected: 10.0.22621.0 up to before 10.0.22621.5768
Microsoft Windows 11 version 22H3
- affected: 10.0.22631.0 up to before 10.0.22631.5768
Microsoft Windows 11 Version 23H2
- affected: 10.0.22631.0 up to before 10.0.22631.5768
Microsoft Windows 11 Version 24H2
- affected: 10.0.26100.0 up to before 10.0.26100.4946
Microsoft Windows Server 2008 R2 Service Pack 1
- affected: 6.1.7601.0 up to before 6.1.7601.27872
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected: 6.1.7601.0 up to before 6.1.7601.27872
Microsoft Windows Server 2008 Service Pack 2
- affected: 6.0.6003.0 up to before 6.0.6003.23471
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
- affected: 6.0.6003.0 up to before 6.0.6003.23471
Microsoft Windows Server 2012
- affected: 6.2.9200.0 up to before 6.2.9200.25622
Microsoft Windows Server 2012 (Server Core installation)
- affected: 6.2.9200.0 up to before 6.2.9200.25622
Microsoft Windows Server 2012 R2
- affected: 6.3.9600.0 up to before 6.3.9600.22725
Microsoft Windows Server 2012 R2 (Server Core installation)
- affected: 6.3.9600.0 up to before 6.3.9600.22725
Microsoft Windows Server 2016
- affected: 10.0.14393.0 up to before 10.0.14393.8330
Microsoft Windows Server 2016 (Server Core installation)
- affected: 10.0.14393.0 up to before 10.0.14393.8330
Microsoft Windows Server 2019
- affected: 10.0.17763.0 up to before 10.0.17763.7678
Microsoft Windows Server 2019 (Server Core installation)
- affected: 10.0.17763.0 up to before 10.0.17763.7678
Microsoft Windows Server 2022
- affected: 10.0.20348.0 up to before 10.0.20348.4052
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
- affected: 10.0.25398.0 up to before 10.0.25398.1791
Microsoft Windows Server 2025
- affected: 10.0.26100.0 up to before 10.0.26100.4946
Microsoft Windows Server 2025 (Server Core installation)
- affected: 10.0.26100.0 up to before 10.0.26100.4946

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Windows NTLM Elevation of Privilege Vulnerability (msrc.microsoft.com)vendor-advisorypatch
vicarius.io/vsociety/posts/cve-2025-53778-detection-script-…
vicarius.io/vsociety/posts/cve-2025-53778-mitigation-script…

Timeline

ID reservedJul 9, 2025
Record publishedAug 12, 2025
Record last updatedFeb 26, 2026

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:49 UTC. Sources and licenses