CVE-2026-62723: Windows Telephony Service Elevation of Privilege Vulnerability
Use after free 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 6.2.9200.26279Patch KB5120385 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - 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 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 6.3.9600.23337Patch KB5120386 - 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-2026-62723?
The severity of CVE-2026-62723 is rated high with a score of 7.
How do I fix CVE-2026-62723?
To fix CVE-2026-62723, apply the latest security updates provided by Microsoft for your Windows version.
What systems are affected by CVE-2026-62723?
CVE-2026-62723 affects Microsoft Windows 10, Windows 11, and several versions of Windows Server including 2012, 2016, 2019, and 2022.
What type of vulnerability is CVE-2026-62723?
CVE-2026-62723 is classified as a Use After Free vulnerability that allows privilege escalation.
Can CVE-2026-62723 be exploited remotely?
CVE-2026-62723 requires local access to the affected system for an attacker to exploit the vulnerability.