VDB

CVE-2026-45487

CVE-2026-45487 PUBLISHED CVSS 7.8 HIGH

Reported by microsoft · Published June 9, 2026

Time-of-check time-of-use (TOCTOU) race condition in Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

Risk Scores

CVSS 3.1
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

Affected Products

VendorProductVersions
MicrosoftWindows 10 Version 21H210.0.19044.0
MicrosoftWindows 10 Version 22H210.0.19045.0
MicrosoftWindows 11 version 23H210.0.22631.0
MicrosoftWindows 11 Version 23H210.0.22631.0
MicrosoftWindows 11 Version 24H210.0.26100.0
MicrosoftWindows 11 Version 25H210.0.26200.0
MicrosoftWindows 11 version 26H110.0.28000.0
MicrosoftWindows Server 202210.0.20348.0
MicrosoftWindows Server 202510.0.26100.0
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0
microsoftwindows_10_22H210.0.19045.0, 10.0.19045.0, 10.0.19045.0
microsoftwindows_11_26H110.0.28000.0, 10.0.28000.0, 10.0.28000.0
MicrosoftWindows 11 Version 24H210.0.26100.0, 10.0.26100.0, 10.0.26100.0
microsoftwindows_server_202510.0.26100.0, 10.0.26100.0, 10.0.26100.0
MicrosoftWindows 11 Version 25H210.0.26200.0, 10.0.26200.0, 10.0.26200.0
microsoftwindows_11_23H210.0.22631.0, 10.0.22631.0, 10.0.22631.0
MicrosoftWindows Server 202210.0.20348.0, 10.0.20348.0, 10.0.20348.0
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0, 10.0.26100.0, 10.0.26100.0
microsoftwindows_server_202210.0.20348.0, 10.0.20348.0, 10.0.20348.0
MicrosoftWindows 10 Version 21H210.0.19044.0, 10.0.19044.0, 10.0.19044.0

…and 8 more

Timeline

  • Jun 9, 2026 CVE Published
  • Jun 10, 2026 Coalition ESS Score
  • Jun 10, 2026 Security Advisory
  • Jun 10, 2026 Security Advisory

References

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