CVE-2026-20834: Windows Spoofing Vulnerability
Absolute path traversal in Windows Shell allows an unauthorized attacker to perform spoofing with a physical attack.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.22968Patch KB5073696 - Upgrade
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Fixed in 6.0.6003.23717Patch KB5073700 - Upgrade
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Fixed in 6.2.9200.25868Patch KB5073698 - Upgrade
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Fixed in 6.1.7601.28117Patch KB5073699 - Upgrade
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Fixed in 10.0.14393.8783Patch KB5073722 - Upgrade
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Fixed in 10.0.26100.32230Patch KB5073379 - Upgrade
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Fixed in 10.0.26100.7623Patch KB5074109 - Upgrade
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Fixed in 10.0.22631.6491Patch KB5073455 - Upgrade
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Fixed in 10.0.25398.2092Patch KB5073450 - Upgrade
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Fixed in 10.0.26200.7623Patch KB5074109 - Upgrade
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Fixed in 10.0.20348.4648Patch KB5073457 - Upgrade
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Fixed in 10.0.17763.8276Patch KB5073723 - Upgrade
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Fixed in 10.0.19045.6809Patch KB5073724 - Upgrade
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Fixed in 10.0.19044.6809Patch KB5073724
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20834?
CVE-2026-20834 has a high severity rating due to its potential for unauthorized access via spoofing.
How do I fix CVE-2026-20834?
To mitigate CVE-2026-20834, install the latest security updates or patches provided by Microsoft for the affected Windows versions.
Which Windows versions are affected by CVE-2026-20834?
CVE-2026-20834 affects multiple Windows Server and Windows 10/11 versions, including Windows Server 2008, 2012, 2016, and various editions of Windows 11.
What does the CVE-2026-20834 vulnerability exploit?
CVE-2026-20834 exploits an absolute path traversal vulnerability in Windows Shell allowing unauthorized spoofing attacks.
Is user interaction required to exploit CVE-2026-20834?
No, CVE-2026-20834 can be exploited by an attacker without user interaction if they have physical access to the system.