HIGH
SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Elevation of Privilege Vulnerability
Published Sep 9, 2025
7.8
HIGHCVSS 3.1
EPSS 0.29%
Description
Integer overflow or wraparound in Windows SPNEGO Extended Negotiation allows an authorized attacker to elevate privileges locally.
Affected products
-
- Version 10.0.10240.0StatusaffectedConstraints<10.0.10240.21128
- Version
-
- Version 10.0.14393.0StatusaffectedConstraints<10.0.14393.8422
- Version
-
- Version 10.0.17763.0StatusaffectedConstraints<10.0.17763.7792
- Version
-
- Version 10.0.19044.0StatusaffectedConstraints<10.0.19044.6332
- Version
-
- Version 10.0.19045.0StatusaffectedConstraints<10.0.19045.6332
- Version
-
- Version 10.0.22631.0StatusaffectedConstraints<10.0.22631.5909
- Version
-
- Version 10.0.26100.0StatusaffectedConstraints<10.0.26100.6584
- Version
-
- Version 10.0.22621.0StatusaffectedConstraints<10.0.22621.5909
- Version
-
- Version 10.0.22631.0StatusaffectedConstraints<10.0.22631.5909
- Version
-
- Version 6.1.7601.0StatusaffectedConstraints<6.1.7601.27929
- Version
- Vendor Microsoft Product Windows Server 2008 R2 Service Pack 1 (Server Core installation) Defaultn/a
- Version 6.1.7601.0StatusaffectedConstraints<6.1.7601.27929
- Version
-
- Version 6.2.9200.0StatusaffectedConstraints<6.2.9200.25675
- Version
-
- Version 6.2.9200.0StatusaffectedConstraints<6.2.9200.25675
- Version
-
- Version 6.3.9600.0StatusaffectedConstraints<6.3.9600.22774
- Version
-
- Version 6.3.9600.0StatusaffectedConstraints<6.3.9600.22774
- Version
-
- Version 10.0.14393.0StatusaffectedConstraints<10.0.14393.8422
- Version
-
- Version 10.0.14393.0StatusaffectedConstraints<10.0.14393.8422
- Version
-
- Version 10.0.17763.0StatusaffectedConstraints<10.0.17763.7792
- Version
-
- Version 10.0.17763.0StatusaffectedConstraints<10.0.17763.7792
- Version
-
- Version 10.0.20348.0StatusaffectedConstraints<10.0.20348.4171
- Version
-
- Version 10.0.25398.0StatusaffectedConstraints<10.0.25398.1849
- Version
-
- Version 10.0.26100.0StatusaffectedConstraints<10.0.26100.6584
- Version
-
- Version 10.0.26100.0StatusaffectedConstraints<10.0.26100.6584
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | n/a |
| ||||||
| Microsoft | Windows 10 Version 1607 | n/a |
| ||||||
| Microsoft | Windows 10 Version 1809 | n/a |
| ||||||
| Microsoft | Windows 10 Version 21H2 | n/a |
| ||||||
| Microsoft | Windows 10 Version 22H2 | n/a |
| ||||||
| Microsoft | Windows 11 Version 23H2 | n/a |
| ||||||
| Microsoft | Windows 11 Version 24H2 | n/a |
| ||||||
| Microsoft | Windows 11 version 22H2 | n/a |
| ||||||
| Microsoft | Windows 11 version 22H3 | n/a |
| ||||||
| Microsoft | Windows Server 2008 R2 Service Pack 1 | n/a |
| ||||||
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2012 | n/a |
| ||||||
| Microsoft | Windows Server 2012 (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2012 R2 | n/a |
| ||||||
| Microsoft | Windows Server 2012 R2 (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2016 | n/a |
| ||||||
| Microsoft | Windows Server 2016 (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2019 | n/a |
| ||||||
| Microsoft | Windows Server 2019 (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2022 | n/a |
| ||||||
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | n/a |
| ||||||
| Microsoft | Windows Server 2025 | n/a |
| ||||||
| Microsoft | Windows Server 2025 (Server Core installation) | n/a |
|
OR
- < 10.0.10240.21128
- < 10.0.10240.21128
- < 10.0.14393.8422
- < 10.0.14393.8422
- < 10.0.17763.7792
- < 10.0.17763.7792
- < 10.0.19044.6332
- < 10.0.19045.6332
- < 10.0.22621.5909
- < 10.0.22631.5909
- < 10.0.26100.6508
- r2
- n/a
- r2
- < 10.0.14393.8422
- < 10.0.17763.7792
- < 10.0.20348.4106
- < 10.0.25398.1849
- < 10.0.26100.6508
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (2)
References (1)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54895 vendor-advisorypatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54895 | vendor-advisorypatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Sep 9, 2025
Updated Feb 20, 2026
Reserved Jul 31, 2025
Link CVE-2025-54895
CISA Vulnrichment
Updated Sep 9, 2025