---
id: 5086
title: "Who’s on the Line? Exploiting RCE in Windows Telephony Service"
source_domain: swarm.ptsecurity.com
source_url: "https://swarm.ptsecurity.com/whos-on-the-line-exploiting-rce-in-windows-telephony-service/"
published_at: "2026-01-19T13:00:59Z"
tags: ["rce", "vulnerability-research", "windows", "telephony", "tapi"]
phying_url: "https://phying.com/item/5086"
lang: en
---

# Who’s on the Line? Exploiting RCE in Windows Telephony Service

## Summary

A flaw in the Windows Telephony Service's server mode lets a low-privileged client write arbitrary data to service-accessible files and, under certain conditions, achieve remote code execution.

## Intelligence Metadata

- **Sources:** swarm.ptsecurity.com
- **Published:** 2026-01-19T13:00:59Z
- **Original:** https://swarm.ptsecurity.com/whos-on-the-line-exploiting-rce-in-windows-telephony-service/
- **Phying News:** https://phying.com/item/5086