HarborGuard / CVE
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HIGHCVE-2026-20853Published Modified CNA microsoft

CVE-2026-20853: Windows WalletService Elevation of Privilege Vulnerability

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

Metrics

CVSS v3.1
7.4
Severity
HIGH
Fixed in
10.0.14393.8783
Affected Products
8

Fix available

10.0.14393.878310.0.17763.827610.0.19044.680910.0.19045.680910.0.22631.649110.0.26100.762310.0.26200.7623
Patch commits
Affected packages
  • Microsoft / Windows 10 Version 1607
    < 10.0.14393.8783 (from 10.0.14393.0)
  • Microsoft / Windows 10 Version 1809
    < 10.0.17763.8276 (from 10.0.17763.0)
  • Microsoft / Windows 10 Version 21H2
    < 10.0.19044.6809 (from 10.0.19044.0)
  • Microsoft / Windows 10 Version 22H2
    < 10.0.19045.6809 (from 10.0.19045.0)
  • Microsoft / Windows 11 version 22H3
    < 10.0.22631.6491 (from 10.0.22631.0)
  • Microsoft / Windows 11 Version 23H2
    < 10.0.22631.6491 (from 10.0.22631.0)
  • Microsoft / Windows 11 Version 24H2
    < 10.0.26100.7623 (from 10.0.26100.0)
  • Microsoft / Windows 11 Version 25H2
    < 10.0.26200.7623 (from 10.0.26200.0)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References