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Windows 11 Version 24H2 CVE-2026-49808

| EUVDEUVD-2026-43833 HIGH
Race Condition (CWE-362)
2026-07-14 microsoft GHSA-5rh9-67v8-4gxh
7.8
CVSS 3.1 · Vendor: microsoft
Temporal: 6.8
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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CIRCL (temporal)
6.8 MEDIUM
cvss

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 18:26 vuln.today
CVE Published
Jul 14, 2026 - 17:06 nvd
HIGH 7.8

DescriptionCVE.org

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

AnalysisAI

Local privilege escalation in the Windows Kernel affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025, where a race condition (CWE-362) in the synchronization of a shared kernel resource lets an authenticated low-privileged local user win a timing window to gain higher privileges. The CVSS 3.1 score is 7.8 with a scope-changed vector, the flaw was reported by Microsoft, and a patch is available. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.

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CVE-2026-49808 vulnerability details – vuln.today

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