---
id: "CVE-2026-119886"
page: "https://infrastack.ai/live/CVE-2026-119886"
kind: "vulnerability"
aliases: ["CVE-2026-119886"]
title: "Windows Telephony Service: missing authentication lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:20:08+00:00"
first_seen_at: "2026-11-10T19:25:01+00:00"
updated_at: "2026-11-10T19:40:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119886", "first_seen_at": "2026-11-10T19:25:01+00:00"}]
exploit_sources: []
---

# Windows Telephony Service: missing authentication lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119886 (this .md is for agents)

The Windows Telephony Service exposes a critical function without an authentication check. An attacker who already has a low-privilege account on the machine can use it to elevate their privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T19:25:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119886

## From the sources

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

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_