CVE-2026-40382
Windows Telephony Service Elevation of Privilege vulnerability
MSRC advisory May 12, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-40382
- Affected products
- Windows Telephony Service Elevation of Privilege · Microsoft Windows Telephony Service Elevation of Privilege · Microsoft
What happened
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
What it means for your business
Windows Telephony Service Elevation of Privilege vulnerability (CVE-2026-40382) was added to Microsoft’s security update guidance. Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
EPSS probability
0.25%
Sources
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Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.