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Windows Server 2025 CVE-2026-50466

| EUVDEUVD-2026-44048 HIGH
Use After Free (CWE-416)
2026-07-14 microsoft GHSA-hwpc-v7rx-8pcj
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

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 - 20:14 vuln.today
CVE Published
Jul 14, 2026 - 17:07 nvd
HIGH 7.8

DescriptionCVE.org

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

AnalysisAI

Local privilege escalation in the Windows Brokering File System component affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025, where a use-after-free memory corruption (CWE-416) lets an already-authenticated local user elevate to higher privileges. Microsoft rates it CVSS 7.8 with full confidentiality, integrity, and availability impact, and has released a patch. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.

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CVE-2026-50466 vulnerability details – vuln.today

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