CVE-2026-20864

HIGH
2026-01-13 [email protected]
7.8
CVSS 3.1
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CVSS Vector

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
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 13, 2026 - 18:16 nvd
HIGH 7.8

Tags

Buffer Overflow Heap Overflow Windows Server 2022 23h2 Windows Server 2022 Windows 10 21h2 Windows 11 23h2 Windows 11 24h2 Windows 10 1809 Windows Server 2019 Windows 10 22h2 Windows Server 2025 Windows 11 25h2 Microsoft

Description

Heap-based buffer overflow in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.

Analysis

Windows Server and Windows 10/11 Connected Devices Platform Service (Cdpsvc) contains a heap buffer overflow that allows authenticated local users to escalate privileges to system level. The vulnerability requires low complexity exploitation with no user interaction, affecting multiple recent Windows versions including Server 2022, Windows 10 21h2, and Windows 11 23h2. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2026-20864 vulnerability details – vuln.today
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