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CVE-2026-119886

Local privilege escalation in Windows Telephony Service

CVSS 3.1
7.8 high
EPSS
—
Published
·
Modified
Analyze CVE-2026-119886 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Windows Telephony Service is missing authentication on a critical function. An attacker who is already signed in locally with low privileges can invoke that function and elevate privileges, with no user interaction. The result is higher privileges on the local system. Microsoft has not listed affected builds or a fixed version.

What to do: Apply Microsoft's update for CVE-2026-119886. No fixed version or workaround is stated.

ProductAffected
Microsoft Windows Telephony Service—
Estimated exposure
No basis for an estimate.

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description · NVD

Missing authentication for critical function in Windows Telephony Service allows an authorized attacker to elevate privileges locally.

Weakness
CWE-306
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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