Vulnerability details

CVE-2026-85357

Microsoft Windows 11Microsoft Windows Server

Windows Phone Service Elevation of Privilege Vulnerability

CVSS 3.1

7.0High

Official description

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

CVSS scores

Score	Version	Source	Vector
7.0High	3.1	CVEProject cvelistV5 (CNA) (microsoft)	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`

Affected products

Vendor	Product	Versions	Source
Microsoft	Windows 11 Version 24H2	10.0.26100.0 ≤ v < 10.0.26100.9711	CVEProject cvelistV5 (CNA)
Microsoft	Windows 11 Version 25H2	10.0.26200.0 ≤ v < 10.0.26200.9711	CVEProject cvelistV5 (CNA)
Microsoft	Windows 11 Version 26H2	10.0.26300.0 ≤ v < 10.0.26300.9711	CVEProject cvelistV5 (CNA)
Microsoft	Windows 11 version 23H2	10.0.22631.0 ≤ v < 10.0.22631.7652	CVEProject cvelistV5 (CNA)
Microsoft	Windows 11 version 23H2	10.0.22631.0 ≤ v < 10.0.22631.7652	CVEProject cvelistV5 (CNA)
Microsoft	Windows 11 version 26H1	10.0.28000.0 ≤ v < 10.0.28000.3231	CVEProject cvelistV5 (CNA)
Microsoft	Windows Server 2022	10.0.20348.0 ≤ v < 10.0.20348.5761	CVEProject cvelistV5 (CNA)

References and advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85357 vendor-advisorypatch

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Details

Published: 2026-10-13
Last updated: 2026-10-31
State: Published
Assigner (CNA): microsoft

Exploit prediction (EPSS)

0.18%

Probability of exploitation in 30 days

8.6%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416
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