CVE-2026-20853 Details
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows WalletService allows an unauthorized attacker to elevate privileges locally.
A race condition vulnerability has been identified in the Windows WalletService, allowing unauthorized attackers to elevate privileges locally. This issue arises from concurrent execution using shared resources without proper synchronization.
Users can apply the security update KB5073722 for Windows 10 (various versions) or KB5074109 for Windows 11 (various versions) to address this vulnerability. These security updates are available through the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20853 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1607 | < 10.0.14393.8783 |
CPE
Remediation
| |
| microsoft windows 10 1809 | < 10.0.17763.8276 |
CPE
Remediation
| |
| microsoft windows 10 21h2 | < 10.0.19044.6809 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.6809 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.6491 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.7623 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.7623 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 15, 2026 | Initial Analysis | [email protected] |
| Jan 13, 2026 | New CVE Received | [email protected] |