CVE-2025-49665

Workspace Broker Elevation of Privilege Vulnerability

At a glance

Severity: HIGH 7.8
EPSS: EPSS 0.32 % · percentile 25 (2026-10-27)
State: PUBLISHED
Published: 2025-07-08
Updated: 2026-02-13
Assigner: microsoft
NVD status: Analyzed

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Workspace Broker allows an authorized attacker to elevate privileges locally.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

European references

ENISA EUVD · EUVD-2025-20579
GCVE · GCVE-0-2025-49665

CERT-FR advisories

CERTFR-2025-AVI-0577 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* < 10.0.10240.21073
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* < 10.0.10240.21073
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.8246
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.8246
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.7558
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.7558
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* < 10.0.19044.6093
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* < 10.0.19045.6093
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* < 10.0.22621.5624
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* < 10.0.22631.5624
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* < 10.0.26100.4652
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8246
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.7558
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.3932
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* < 10.0.25398.1732
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.4652

Affected products

Product	Versions
Microsoft · Windows 10 Version 1507	affected 10.0.10240.0 < 10.0.10240.21073
Microsoft · Windows 10 Version 1607	affected 10.0.14393.0 < 10.0.14393.8246
Microsoft · Windows 10 Version 1809	affected 10.0.17763.0 < 10.0.17763.7558
Microsoft · Windows 10 Version 21H2	affected 10.0.19044.0 < 10.0.19044.6093
Microsoft · Windows 10 Version 22H2	affected 10.0.19045.0 < 10.0.19045.6093
Microsoft · Windows 11 version 22H2	affected 10.0.22621.0 < 10.0.22621.5624
Microsoft · Windows 11 version 22H3	affected 10.0.22631.0 < 10.0.22631.5624
Microsoft · Windows 11 Version 23H2	affected 10.0.22631.0 < 10.0.22631.5624
Microsoft · Windows 11 Version 24H2	affected 10.0.26100.0 < 10.0.26100.4652
Microsoft · Windows Server 2012	affected 6.2.9200.0 < 6.2.9200.25573
Microsoft · Windows Server 2012 (Server Core installation)	affected 6.2.9200.0 < 6.2.9200.25573
Microsoft · Windows Server 2012 R2	affected 6.3.9600.0 < 6.3.9600.22676
Microsoft · Windows Server 2012 R2 (Server Core installation)	affected 6.3.9600.0 < 6.3.9600.22676
Microsoft · Windows Server 2016	affected 10.0.14393.0 < 10.0.14393.8246
Microsoft · Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 < 10.0.14393.8246
Microsoft · Windows Server 2019	affected 10.0.17763.0 < 10.0.17763.7558
Microsoft · Windows Server 2019 (Server Core installation)	affected 10.0.17763.0 < 10.0.17763.7558
Microsoft · Windows Server 2022	affected 10.0.20348.0 < 10.0.20348.3932
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)	affected 10.0.25398.0 < 10.0.25398.1732
Microsoft · Windows Server 2025	affected 10.0.26100.0 < 10.0.26100.4652

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49665

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD