Home/CVE/Double free in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE

CVE-2026-26166

Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

HIGH · CVSS 7 EPSS 0.00052
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-415Double Free
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Affected Products & Versions

7
microsoft windows 11 23h2< 10.0.22631.6936
microsoft windows 11 24h2< 10.0.26100.8246
microsoft windows 11 25h2< 10.0.26200.8246
microsoft windows 11 26h1< 10.0.28000.1836
microsoft windows server 2022< 10.0.20348.5020
microsoft windows server 2022 23h2< 10.0.25398.2274
microsoft windows server 2025< 10.0.26100.32690
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Scoring & Timeline

7
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Apr 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2026-26166Elevation of Privilege
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