CVE-2026-20843

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

Description

Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.

Analysis

Local privilege escalation in Windows RRAS affects Windows 10, Windows 11, and Windows Server 2022, allowing authenticated users to gain system-level access through improper access control mechanisms. An attacker with local user credentials can exploit this vulnerability to obtain elevated privileges on the affected system. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

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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-2026-20843 vulnerability details – vuln.today

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