CVE-2025-54917 — MapUrlToZone Security Feature Bypass Vulnerability

Executive Summary

Protection mechanism failure in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature over a network.

Overview

4.3

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Security Feature Bypass

Weakness CWE-693: Protection Mechanism Failure

Released Sep 9 2025

Last Updated Sep 9 2025

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.00842 — 0.54148 percentile

NVD CVSS 4.3 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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

Low

INTEGRITY

None

AVAILABILITY

None

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 3.8

EPSS Score

0.00842

probability of exploitation in the next 30 days

0.54148 percentile - updated 2026-07-25

View on FIRST.org

Affected Products

21 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`5065430 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 for x64-based Systems	`5065430 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 1607 for 32-bit Systems	`5065427 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 1607 for x64-based Systems	`5065427 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 1809 for 32-bit Systems	`5065428 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 1809 for x64-based Systems	`5065428 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 21H2 for 32-bit Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 21H2 for ARM64-based Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 21H2 for x64-based Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 22H2 for 32-bit Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 22H2 for ARM64-based Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 10 Version 22H2 for x64-based Systems	`5065429 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 11 Version 22H2 for ARM64-based Systems	`5065431 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 11 Version 22H2 for x64-based Systems	`5065431 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 11 Version 23H2 for ARM64-based Systems	`5065431 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 11 Version 23H2 for x64-based Systems	`5065431 (Security Update)`	Important	Security Feature Bypass	Yes
Windows 11 Version 24H2 for ARM64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Important Security Feature Bypass 5063878 5064010 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.6584 10.0.26100.6508 Yes None Windows 11 Version 24H2 for x64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Important Security Feature Bypass 5063878 5064010 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.6584 10.0.26100.6508 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 5065508 (Monthly Rollup) 5065511 (Security Only) 5065435 (IE Cumulative) Important Security Feature Bypass 5063888 5060996 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23529 1.000 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5065508 (Monthly Rollup) 5065511 (Security Only) 5065435 (IE Cumulative) Important Security Feature Bypass 5063888 5060996 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23529 1.000 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 5065508 (Monthly Rollup) 5065511 (Security Only) 5065435 (IE Cumulative) Important Security Feature Bypass 5063888 5060996 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23529 1.000 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5065508 (Monthly Rollup) 5065511 (Security Only) 5065435 (IE Cumulative) Important Security Feature Bypass 5063888 5060996 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 6.0.6003.23529 1.000 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 5065435 (IE Cumulative) 5065468 (Monthly Rollup) 5065510 (Security Only) Important Security Feature Bypass 5060996 5063947 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.1.7601.27929 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5065435 (IE Cumulative) 5065468 (Monthly Rollup) 5065510 (Security Only) Important Security Feature Bypass 5060996 5063947 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.1.7601.27929 Yes None Windows Server 2012 5065435 (IE Cumulative) 5065509 (Monthly Rollup) Important Security Feature Bypass 5060996 5063906 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.2.9200.25675 Yes None Windows Server 2012 (Server Core installation) 5065435 (IE Cumulative) 5065509 (Monthly Rollup) Important Security Feature Bypass 5060996 5063906 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.2.9200.25675 Yes None Windows Server 2012 R2 5065435 (IE Cumulative) 5065507 (Monthly Rollup) Important Security Feature Bypass 5060996 5063950 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.3.9600.22774 Yes None Windows Server 2012 R2 (Server Core installation) 5065435 (IE Cumulative) 5065507 (Monthly Rollup) Important Security Feature Bypass 5060996 5063950 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 1.000 6.3.9600.22774 Yes None Windows Server 2016	`5065427 (Security Update)`	Important	Security Feature Bypass	Yes
Windows Server 2016 (Server Core installation)	`5065427 (Security Update)`	Important	Security Feature Bypass	Yes
Windows Server 2019	`5065428 (Security Update)`	Important	Security Feature Bypass	Yes
Windows Server 2019 (Server Core installation)	`5065428 (Security Update)`	Important	Security Feature Bypass	Yes
Windows Server 2022 5065432 (Security Update) 5065306 (SecurityHotpatchUpdate) Important Security Feature Bypass 5063880 5063812 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 10.0.20348.4171 10.0.20348.4106 Yes None Windows Server 2022 (Server Core installation) 5065432 (Security Update) 5065306 (SecurityHotpatchUpdate) Important Security Feature Bypass 5063880 5063812 Base: 4.3 Temporal: 3.8 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C 10.0.20348.4171 10.0.20348.4106 Yes None Windows Server 2022, 23H2 Edition (Server Core installation)	`5065425 (Security Update)`	Important	Security Feature Bypass	Yes

Patches

6 patches

Article	Type	Restart
`5065430`	Security Update	Yes
`5065427`	Security Update	Yes
`5065428`	Security Update	Yes
`5065429`	Security Update	Yes
`5065431`	Security Update	Yes
`5065425`	Security Update	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

Ben Lichtman
George Hughey

References

MSRC Advisory MITRE NVD