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High severity · published Apr 14, 2026
CVE-2026-25184
Applocker Filter Driver (applockerfltr.sys) Elevation of Privilege Vulnerability
7.0
CVSS
0.2%
EPSS
No
On KEV
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Applocker Filter Driver (applockerfltr.sys) allows an authorized attacker to elevate privileges locally.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
W1
Windows 11 Version 24H2 · Microsoft
10.0.26100.0 before 10.0.26100.8246 · source: vendor
W1
Windows 11 Version 25H2 · Microsoft
10.0.26200.0 before 10.0.26200.8246 · source: vendor
W1
Windows 11 version 23H2 · Microsoft
10.0.22631.0 before 10.0.22631.6936; 10.0.22631.0 before 10.0.22631.6936 · source: vendor
W1
Windows 11 version 26H1 · Microsoft
10.0.28000.0 before 10.0.28000.1836 · source: vendor
WS
Windows Server 2022, 23H2 Edition (Server Core installation) · Microsoft
10.0.25398.0 before 10.0.25398.2274 · source: vendor
WS
Windows Server 2025 · Microsoft
10.0.26100.0 before 10.0.26100.32690 · source: vendor, NVD
WS
Windows Server 2025 (Server Core installation) · Microsoft
10.0.26100.0 before 10.0.26100.32690 · source: vendor
W1
Windows 11 23h2 · Microsoft
before 10.0.22631.6936; before 10.0.22631.6936 · source: NVD
W1
Windows 11 24h2 · Microsoft
before 10.0.26100.8246; before 10.0.26100.8246 · source: NVD
W1
Windows 11 25h2 · Microsoft
before 10.0.26200.8246; before 10.0.26200.8246 · source: NVD
W1
Windows 11 26h1 · Microsoft
before 10.0.28000.1836; before 10.0.28000.1836 · source: NVD
WS
Windows Server 2022 23h2 · Microsoft
before 10.0.25398.2274 · source: NVD
Affected product
W1
Windows 11 version 23H2
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25184
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25184
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25184
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