Home/CVE/Heap-based buffer overflow in Windows Kernel allows an authorized attacker to execute code over a network.
CVE

CVE-2025-49666

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to execute code over a network.

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to execute code over a network.

HIGH · CVSS 7.2 EPSS 0.0162
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
▤

Affected Products & Versions

5
microsoft windows server 2016< 10.0.14393.8246
microsoft windows server 2019< 10.0.17763.7558
microsoft windows server 2022< 10.0.20348.3932
microsoft windows server 2022 23h2< 10.0.25398.1732
microsoft windows server 2025< 10.0.26100.4652
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Scoring & Timeline

7.2
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 NVD08 Jul 2025 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/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-2025-49666Remote Code Execution
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