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CVE-2026-20891: Escalation of Privilege in Intel(R) PROSet/Wireless WiFi Software for Windows

0
Medium
VulnerabilityCVE-2026-20891cvecve-2026-20891
Published: 08/11/2026 (08/11/2026, 16:27:03 UTC)
Source: CVE Database V5
Product: Intel(R) PROSet/Wireless WiFi Software for Windows

Description

CVE-2026-20891 is a medium severity vulnerability in Intel(R) PROSet/Wireless WiFi Software for Windows. It involves improper authentication within Ring 2 device drivers that may allow an unprivileged, unauthenticated local attacker to escalate privileges. The attack requires local access but no user interaction or special internal knowledge. The vulnerability primarily impacts system confidentiality with potential high confidentiality impact and low integrity and availability impacts.

CVSS v4.0

Score 6.3medium

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
None
Vuln. Availability
None
Subsq. Confidentiality
High
Subsq. Integrity
Low
Subsq. Availability
Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:L

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/12/2026, 00:11:52 UTC

Technical Analysis

This vulnerability arises from improper authentication in Intel(R) PROSet/Wireless WiFi Software for Windows device drivers operating in Ring 2. An unprivileged attacker with local access and no authentication can exploit this flaw to escalate privileges on the system. The attack complexity is low and does not require user interaction or special internal knowledge. The vulnerability affects confidentiality primarily, with potential subsequent impacts on system confidentiality (high), integrity (low), and availability (low). No known exploits are reported in the wild, and no patch or remediation level has been provided by the vendor as of the publication date.

Potential Impact

The vulnerability allows local privilege escalation by an unauthenticated, unprivileged attacker, potentially leading to high confidentiality compromise of the system. Integrity and availability impacts are assessed as low or none. Since the attack requires local access, remote exploitation is not indicated. No known active exploitation has been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been published by the vendor at this time.

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Technical Details

Data Version
5.2
Assigner Short Name
intel
Date Reserved
2025-12-03T18:04:52.948Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7b546ebf8831d539106b34

Added to database: 08/11/2026, 16:57:18 UTC

Last enriched: 08/12/2026, 00:11:52 UTC

Last updated: 08/12/2026, 01:21:27 UTC

Views: 4

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