CVE-2026-20776

Adjacent unauthenticated service interruption via faulty condition check

Published Aug 11, 2026 · Updated Aug 11, 2026

Improper condition checking in Intel PROSet/Wireless WiFi Software before 24.10 allows remote attackers to cause a service interrupt over Wi-Fi. The flaw resides in Ring 2 device drivers, but Intel has not disclosed which condition is checked incorrectly or which crafted wireless input reaches it. An unauthenticated attacker within adjacent wireless range needs no user interaction; the exact driver or system failure mode remains undisclosed.

CVSS severity8.3
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper condition checking in Intel PROSet/Wireless WiFi Software before 24.10 allows remote attackers to cause a service interrupt over Wi-Fi. The flaw resides in Ring 2 device drivers, but Intel has not disclosed which condition is checked incorrectly or which crafted wireless input reaches it. An unauthenticated attacker within adjacent wireless range needs no user interaction; the exact driver or system failure mode remains undisclosed.

The record

CVE
CVE-2026-20776
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Topcon Positioning Systems, Inc.
Product
Intel PROSet/Wireless WiFi Software
Classifications
CWE-754, T1499
Attack vector
adjacent
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 vectoradjacent
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

8.3IntelCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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