CVE-2026-20931
Modified Modified - Updated After Analysis
Path Traversal in Windows Telephony Service Enables Privilege Escalation

Publication date: 2026-01-13

Last updated on: 2026-05-26

Assigner: Microsoft Corporation

Description
External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-01-13
Last Modified
2026-05-26
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20931
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_telephony_service *
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-73 The product allows user input to control or influence paths or file names that are used in filesystem operations.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability involves external control of a file name or path in the Windows Telephony Service, which allows an authorized attacker to elevate their privileges over an adjacent network. [1]

Impact Analysis

An attacker who is authorized and has access to an adjacent network can exploit this vulnerability to elevate their privileges, potentially gaining higher-level access and control over the affected system. [1]

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20931. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart