Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What privileges could an attacker gain by exploiting this vulnerability?
An attacker who successfully exploited this vulnerability could execute code with the privileges of the Network Service account.
Security updates
10.0.14393.9688 — https://support.microsoft.com/help/5131291
10.0.17763.9487 — https://support.microsoft.com/help/5131085
10.0.19044.7846 — https://support.microsoft.com/help/5131096
10.0.20348.5870 — https://support.microsoft.com/help/5131090
10.0.22631.7711 — https://support.microsoft.com/help/5131087
Vulnerabilities 1
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Medium 6.6
Windows Telephony Service Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Telephony Service allows an authorized attacker to elevate privileges with a physical attack.
Revision history
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#1
Information published.
References
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CVE-2026-116700 Windows Telephony Service Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116700
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss