Home/CVE/Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE

CVE-2026-35420

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

HIGH · CVSS 7.8 EPSS 0.00049
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-122Heap-based Buffer Overflow
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Affected Products & Versions

6
microsoft windows server 2012all versions
microsoft windows server 2016< 10.0.14393.9140
microsoft windows server 2019< 10.0.17763.8755
microsoft windows server 2022< 10.0.20348.5074
microsoft windows server 2022 23h2< 10.0.25398.2330
microsoft windows server 2025< 10.0.26100.32772
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Scoring & Timeline

7.8
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 NVD12 May 2026 · 06:17 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/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-2026-35420Elevation of Privilege
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