CVE-2026-20931

CWE-736 documents6 sources
Severity
8.0HIGH
EPSS
0.8%
top 26.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
32
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+29 more
Timeline
PublishedJan 13

Description

External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.1 | Impact: 5.9

Affected Packages31 packages

▶CVEListV5microsoft/windows_server_2008_service_pack_26.0.6003.0 — 6.0.6003.23717
▶CVEListV5microsoft/windows_server_2008_r2_service_pack_16.1.7601.0 — 6.1.7601.28117
▶NVDmicrosoft/windows< 10.0.14393.8783+5

🔴Vulnerability Details

3
CVEList
Windows Telephony Service Elevation of Privilege Vulnerability↗2026-01-13
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GHSA
GHSA-qvh8-5v9x-29hh: External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network↗2026-01-13
▶
VulnCheck
Microsoft Windows External Control of File Name or Path↗2026
▶

📋Vendor Advisories

1
Microsoft
Windows Telephony Service Elevation of Privilege Vulnerability↗2026-01-13
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🕵️Threat Intelligence

1
Wiz
CVE-2026-20931 Impact, Exploitability, and Mitigation Steps | Wiz↗
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