CVE-2025-49665Workspace Broker Elevation of Privilege Vulnerability
- 7.8HighCVSS base score
- 0.33%Exploitation in 30 daysEPSS · top 73% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Workspace Broker allows an authorized attacker to elevate privileges locally.
Timeline
ID reserved
By microsoft
- 29 days later
· 29 days later
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.8 | 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 |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.33% · top 73% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
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
Microsoft · Windows Server 2025 (Server Core installation)
- affected 10.0.26100.0 – < 10.0.26100.4652
References
References1
- Workspace Broker Elevation of Privilege Vulnerability (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-20579 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-49665)Record last updated .