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Windows 11 Version 24H2 CVE-2026-50305

| EUVDEUVD-2026-43851 HIGH
Use After Free (CWE-416)
2026-07-14 microsoft GHSA-j9cm-c7pc-7p45
7.8
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

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

Lifecycle Timeline

2
Analysis Generated
Jul 14, 2026 - 21:52 vuln.today
CVE Published
Jul 14, 2026 - 17:06 nvd
HIGH 7.8

DescriptionCVE.org

Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

AnalysisAI

Local privilege escalation in the Microsoft Brokering File System affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025, where a use-after-free (CWE-416) memory-corruption flaw lets an already-authenticated local user execute code with elevated (typically SYSTEM) privileges. Microsoft has released a patch and reported the issue itself; there is no public exploit identified at time of analysis and it is not listed in CISA KEV. …

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Recommended ActionAI

Within 24 hours, identify and inventory all Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025 systems in your environment; begin testing and deploying the vendor patch immediately on non-production systems. …

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CVE-2026-50305 vulnerability details – vuln.today

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