CVE-2025-50154 — Microsoft Windows File Explorer Spoofing Vulnerability

Executive Summary

Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauthorized attacker to perform spoofing over a network.

Overview

6.5

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

Exploitation Unlikely

MS Exploit Likelihood

Category Spoofing

Released Aug 12 2025

Last Updated Aug 12 2025

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.25671 — 0.97694 percentile

NVD CVSS 6.5 MEDIUM — differs from MSRC

CVSS Vector

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

ATTACK VECTOR

Network

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

None

USER INTERACTION

Required

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

None

AVAILABILITY

None

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 6.5

EPSS Score

0.25671

probability of exploitation in the next 30 days

0.97694 percentile - updated 2026-06-21

View on FIRST.org

Affected Products

25 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`5063889 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 for x64-based Systems	`5063889 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 1607 for 32-bit Systems	`5063871 (Security Update)`	Important	Spoofing	Yes
Windows 10 Version 1607 for x64-based Systems	`5063871 (Security Update)`	Important	Spoofing	Yes
Windows 10 Version 1809 for 32-bit Systems	`5063877 (Security Update)`	Important	Spoofing	Yes
Windows 10 Version 1809 for x64-based Systems	`5063877 (Security Update)`	Important	Spoofing	Yes
Windows 10 Version 21H2 for 32-bit Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 21H2 for ARM64-based Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 21H2 for x64-based Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 22H2 for 32-bit Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 22H2 for ARM64-based Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 10 Version 22H2 for x64-based Systems	`5063709 (SecurityUpdate)`	Important	Spoofing	Yes
Windows 11 Version 22H2 for ARM64-based Systems	`5063875 (Security Update)`	Important	Spoofing	Yes
Windows 11 Version 22H2 for x64-based Systems	`5063875 (Security Update)`	Important	Spoofing	Yes
Windows 11 Version 23H2 for ARM64-based Systems	`5063875 (Security Update)`	Important	Spoofing	Yes
Windows 11 Version 23H2 for x64-based Systems	`5063875 (Security Update)`	Important	Spoofing	Yes
Windows 11 Version 24H2 for ARM64-based Systems 5063878 (Security Update) 5064010 (SecurityHotpatchUpdate) Important Spoofing 5062553 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.4946 10.0.26100.4851 Yes None Windows 11 Version 24H2 for x64-based Systems 5063878 (Security Update) 5064010 (SecurityHotpatchUpdate) Important Spoofing 5062553 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.4946 10.0.26100.4851 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 5063888 (MonthlyRollup) 5063948 (SecurityOnly) Important Spoofing 5062624 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23471 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5063888 (MonthlyRollup) 5063948 (SecurityOnly) Important Spoofing 5062624 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23471 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 5063888 (MonthlyRollup) 5063948 (SecurityOnly) Important Spoofing 5062624 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23471 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5063888 (MonthlyRollup) 5063948 (SecurityOnly) Important Spoofing 5062624 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23471 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 5063947 (MonthlyRollup) 5063927 (SecurityOnly) Important Spoofing 5062632 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.27872 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5063947 (MonthlyRollup) 5063927 (SecurityOnly) Important Spoofing 5062632 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 6.1.7601.27872 Yes None Windows Server 2012	`5063906 (MonthlyRollup)`	Important	Spoofing	Yes
Windows Server 2012 (Server Core installation)	`5063906 (MonthlyRollup)`	Important	Spoofing	Yes
Windows Server 2012 R2	`5063950 (MonthlyRollup)`	Important	Spoofing	Yes
Windows Server 2012 R2 (Server Core installation)	`5063950 (MonthlyRollup)`	Important	Spoofing	Yes
Windows Server 2016	`5063871 (Security Update)`	Important	Spoofing	Yes
Windows Server 2016 (Server Core installation)	`5063871 (Security Update)`	Important	Spoofing	Yes
Windows Server 2019	`5063877 (Security Update)`	Important	Spoofing	Yes
Windows Server 2019 (Server Core installation)	`5063877 (Security Update)`	Important	Spoofing	Yes
Windows Server 2022 5063880 (SecurityUpdate) 5063812 (SecurityHotpatchUpdate) Important Spoofing 5062572 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.20348.4052 10.0.20348.3989 Yes None Windows Server 2022 (Server Core installation) 5063880 (SecurityUpdate) 5063812 (SecurityHotpatchUpdate) Important Spoofing 5062572 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.20348.4052 10.0.20348.3989 Yes None Windows Server 2022, 23H2 Edition (Server Core installation)	`5063899 (SecurityUpdate)`	Important	Spoofing	Yes

Patches

8 patches

Article	Type	Restart
`5063889`	SecurityUpdate	Yes
`5063871`	Security Update	Yes
`5063877`	Security Update	Yes
`5063709`	SecurityUpdate	Yes
`5063875`	Security Update	Yes
`5063906`	MonthlyRollup	Yes
`5063950`	MonthlyRollup	Yes
`5063899`	SecurityUpdate	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Ruben Enkaoua

References

MSRC Advisory MITRE NVD