CVE-2026-25187 [High] | Security Vulnerability in Windows 10 1607

CVE-2026-25187 is rated Moderate Risk (42.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.12%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-11	—	0.12%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-11

—

0.12%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

Affected software / configurations for CVE-2026-25187

Vendor	Product	Version	Raw CPE
microsoft	windows_10_1607	< 10.0.14393.8957	cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*
microsoft	windows_10_1607	< 10.0.14393.8957	cpe:2.3:o:microsoft:windows_10_1607:::::::x86:*
microsoft	windows_10_1809	< 10.0.17763.8511	cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*
microsoft	windows_10_1809	< 10.0.17763.8511	cpe:2.3:o:microsoft:windows_10_1809:::::::x86:*
microsoft	windows_10_21h2	< 10.0.19044.7058	cpe:2.3:o:microsoft:windows_10_21h2:::::::arm64:*
microsoft	windows_10_21h2	< 10.0.19044.7058	cpe:2.3:o:microsoft:windows_10_21h2:::::::x64:*
microsoft	windows_10_21h2	< 10.0.19044.7058	cpe:2.3:o:microsoft:windows_10_21h2:::::::x86:*
microsoft	windows_10_22h2	< 10.0.19045.7058	cpe:2.3:o:microsoft:windows_10_22h2:::::::arm64:*
microsoft	windows_10_22h2	< 10.0.19045.7058	cpe:2.3:o:microsoft:windows_10_22h2:::::::x64:*
microsoft	windows_10_22h2	< 10.0.19045.7058	cpe:2.3:o:microsoft:windows_10_22h2:::::::x86:*
microsoft	windows_11_23h2	< 10.0.22631.6783	cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*
microsoft	windows_11_23h2	< 10.0.22631.6783	cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:*
microsoft	windows_11_24h2	< 10.0.26100.7979	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
microsoft	windows_11_24h2	< 10.0.26100.7979	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
microsoft	windows_11_25h2	< 10.0.26200.7979	cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:*
microsoft	windows_11_25h2	< 10.0.26200.7979	cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:*
microsoft	windows_11_26h1	< 10.0.28000.1719	cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:*
microsoft	windows_11_26h1	< 10.0.28000.1719	cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:*
microsoft	windows_server_2012	—	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
microsoft	windows_server_2012	r2	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
microsoft	windows_server_2016	< 10.0.14393.8957	cpe:2.3:o:microsoft:windows_server_2016::::::::
microsoft	windows_server_2019	< 10.0.17763.8511	cpe:2.3:o:microsoft:windows_server_2019::::::::
microsoft	windows_server_2022	< 10.0.20348.4830	cpe:2.3:o:microsoft:windows_server_2022::::::::
microsoft	windows_server_2022_23h2	< 10.0.25398.2207	cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::
microsoft	windows_server_2025	< 10.0.26100.32463	cpe:2.3:o:microsoft:windows_server_2025:::::::x64:*

References for CVE-2026-25187

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25187	Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2026-25187-detection-script-winlogon-elevation-of-privilege-vulnerability
https://www.vicarius.io/vsociety/posts/cve-2026-25187-mitigation-script-winlogon-elevation-of-privilege-vulnerability

URL

CVE-2026-25187 | Winlogon Elevation of Privilege Vulnerability

Exploit prediction scoring system (EPSS) score for CVE-2026-25187

Common vulnerability scoring system (CVSS) metrics for CVE-2026-25187

Weakness enumeration for CVE-2026-25187

GitHub Security Advisory for CVE-2026-25187

Affected software / configurations for CVE-2026-25187

References for CVE-2026-25187