CVE-2026-20891

Local code execution via improper driver authentication

Published Aug 11, 2026 · Updated Aug 11, 2026

Improper authentication in Intel PROSet/Wireless WiFi Software for Windows allows local users to execute code through a device driver. The flaw is within the Ring 2 device-driver layer, but Intel has not disclosed the affected routine, authentication decision, or rejected input. Local access by unprivileged software is sufficient without user interaction; exploitation exposes limited local data and produces high subsequent confidentiality impact.

CVSS severity6.3
Medium
EPSS probability0.13%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Intel PROSet/Wireless WiFi Software for Windows allows local users to execute code through a device driver. The flaw is within the Ring 2 device-driver layer, but Intel has not disclosed the affected routine, authentication decision, or rejected input. Local access by unprivileged software is sufficient without user interaction; exploitation exposes limited local data and produces high subsequent confidentiality impact.

The record

CVE
CVE-2026-20891
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Topcon Positioning Systems, Inc.
Product
Intel PROSet/Wireless WiFi Software
Classifications
CWE-287, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel PROSet/Wireless WiFi Softwareversion=See references

Published CVSS scores

6.3IntelCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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