CVE-2026-54107

HIGH 1 PoC
MEDIUM Priority: 0.02 BB Relevance: 53/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Changed
C: High
I: High
A: High

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.

Affected Software (58)

VendorProductVersion
Microsoft Windows 10 Version 1607 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows 10 Version 1607 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows 10 Version 1809 10.0.17763.0 < 10.0.17763.9020
Microsoft Windows 10 Version 1809 10.0.17763.0 < 10.0.17763.9020
Microsoft Windows 10 Version 21H2 10.0.19044.0 < 10.0.19044.7548
Microsoft Windows 10 Version 21H2 10.0.19044.0 < 10.0.19044.7548
Microsoft Windows 10 Version 22H2 10.0.19045.0 < 10.0.19045.7548
Microsoft Windows 10 Version 22H2 10.0.19045.0 < 10.0.19045.7548
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.8875
Microsoft Windows 11 Version 24H2 10.0.26100.0 < 10.0.26100.8875
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.8875
Microsoft Windows 11 Version 25H2 10.0.26200.0 < 10.0.26200.8875
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2525
Microsoft Windows 11 version 26H1 10.0.28000.0 < 10.0.28000.2525
Microsoft Windows Server 2012 6.2.9200.0 < 6.2.9200.26226
Microsoft Windows Server 2012 6.2.9200.0 < 6.2.9200.26226
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 < 6.2.9200.26226
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 < 6.2.9200.26226
Microsoft Windows Server 2012 R2 6.3.9600.0 < 6.3.9600.23291
Microsoft Windows Server 2012 R2 6.3.9600.0 < 6.3.9600.23291
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 < 6.3.9600.23291
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 < 6.3.9600.23291
Microsoft Windows Server 2016 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows Server 2016 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 < 10.0.14393.9339
Microsoft Windows Server 2019 10.0.17763.0 < 10.0.17763.9020
Microsoft Windows Server 2019 10.0.17763.0 < 10.0.17763.9020
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 < 10.0.17763.9020
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 < 10.0.17763.9020
Showing 30 of 58 entries

References & Advisories (1)

Proof of Concept (1)

Bug Bounty Relevance

53 / 100
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.21%
Raw Score 0.002140
Percentile 11.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00214
2026-10-28
0.00214

Intelligence Sources

mitre ref →