CVE-2026-62703: Windows DWM Core Library Information Disclosure Vulnerability
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
Other sources
Windows DWM Core Library 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 10.0.22631.7517Patch KB5120240 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.17763.9115Patch KB5120238 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26200.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26200.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62703?
The severity of CVE-2026-62703 is classified as medium with a score of 5.5.
How do I fix CVE-2026-62703?
To fix CVE-2026-62703, ensure that your Microsoft Windows operating system is updated to the latest security patches provided by Microsoft.
What type of vulnerability is CVE-2026-62703?
CVE-2026-62703 is an information disclosure vulnerability due to an out-of-bounds read in the Windows DWM Core Library.
Who is affected by CVE-2026-62703?
CVE-2026-62703 affects users of Microsoft Windows 11, Windows 10, and various versions of Windows Server.
Can CVE-2026-62703 be exploited remotely?
CVE-2026-62703 requires local access for exploitation, as it can only disclose information to an authorized attacker on the same machine.