CVE-2026-62748: Windows Telephony Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
Other sources
Windows Telephony Service Elevation of Privilege 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 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 6.3.9600.23337Patch KB5120386 - Upgrade
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Fixed in 6.2.9200.26279Patch KB5120385 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.17763.9115Patch KB5120238
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62748?
CVE-2026-62748 has a severity rating of high, with a score of 7.
How do I fix CVE-2026-62748?
To remediate CVE-2026-62748, apply the latest security updates from Microsoft for affected Windows operating systems.
What systems are affected by CVE-2026-62748?
CVE-2026-62748 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server including 2012 R2, 2016, 2019, 2022, and 2025.
What type of vulnerability is CVE-2026-62748?
CVE-2026-62748 is a race condition vulnerability in the Windows Telephony Service that can lead to elevation of privilege.
Can CVE-2026-62748 be exploited remotely?
CVE-2026-62748 requires local access to exploit, as it is a local elevation of privilege vulnerability.