CVE-2026-20806: Windows COM Server Information Disclosure Vulnerability
Access of resource using incompatible type ('type confusion') in Windows COM allows an authorized attacker to disclose information locally.
Other sources
Windows COM Server Information Disclosure Vulnerability
— Microsoft
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 10.0.26100.8246Patch KB5083769 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7184Patch KB5082200 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.6936Patch KB5082052 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.8246Patch KB5083769 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.32690Patch KB5082063 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7184Patch KB5082200 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.25398.2274Patch KB5082060 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.8644Patch KB5082123 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5020Patch KB5082142 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.1836Patch KB5083768
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20806?
CVE-2026-20806 is classified as a moderate severity information disclosure vulnerability.
How do I fix CVE-2026-20806?
To fix CVE-2026-20806, apply the latest security patches provided by Microsoft for your affected software.
What versions of Windows are affected by CVE-2026-20806?
CVE-2026-20806 affects multiple versions of Windows, including Windows 10, Windows 11, and Windows Server 2022.
Can CVE-2026-20806 be exploited remotely?
No, CVE-2026-20806 requires local access for an attacker to exploit the vulnerability.
What type of information can be disclosed by exploiting CVE-2026-20806?
Exploiting CVE-2026-20806 can lead to the disclosure of sensitive information due to type confusion in Windows COM.