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CVE-2026-25188— Windows Telephony Service Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1607
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Telephony Server是美国微软（Microsoft）公司的一个组件，它支持电话应用程序编程接口（TAPI），允许计算机程序与共享的电话服务进行通信。 Microsoft Windows Telephony Server存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 22H2 for x64-based Systems,Windows 10 Version 22H2 for ARM64-based Sy

CVSS 8.8 · High EPSS 0.58% · P46

Affected Version Matrix 21

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.8957 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.8511 affected
Microsoft Windows 10 Version 21H2 10.0.19044.0< 10.0.19044.7058 affected
Microsoft Windows 10 Version 22H2 10.0.19045.0< 10.0.19045.7058 affected
Microsoft Windows 11 version 22H3 10.0.22631.0< 10.0.22631.6783 affected
Microsoft Windows 11 Version 23H2 10.0.22631.0< 10.0.22631.6783 affected
Microsoft Windows 11 Version 24H2 10.0.26100.0< 10.0.26100.8037 affected
Microsoft Windows 11 Version 25H2 10.0.26200.0< 10.0.26200.8037 affected
Microsoft Windows 11 version 26H1 10.0.28000.0< 10.0.28000.1719 affected
Microsoft Windows Server 2012 6.2.9200.0< 6.2.9200.25973 affected
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0< 6.2.9200.25973 affected
Microsoft Windows Server 2012 R2 6.3.9600.0< 6.3.9600.23074 affected
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0< 6.3.9600.23074 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.8957 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.8957 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.8511 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.8511 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.4893 affected
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0< 10.0.25398.2207 affected
Microsoft Windows Server 2025 10.0.26100.0< 10.0.26100.32522 affected
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0< 10.0.26100.32522 affected
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I. Basic Information for CVE-2026-25188

Vulnerability Information
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Vulnerability Title
Windows Telephony Service Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in Windows Telephony Service allows an unauthorized attacker to elevate privileges over an adjacent network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Telephony Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Telephony Server是美国微软（Microsoft）公司的一个组件，它支持电话应用程序编程接口（TAPI），允许计算机程序与共享的电话服务进行通信。 Microsoft Windows Telephony Server存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 22H2 for x64-based Systems,Windows 10 Version 22H2 for ARM64-based Sy
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.8957 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.8511 -
Microsoft Windows 10 Version 21H2 10.0.19044.0 ~ 10.0.19044.7058 -
Microsoft Windows 10 Version 22H2 10.0.19045.0 ~ 10.0.19045.7058 -
Microsoft Windows 11 version 22H3 10.0.22631.0 ~ 10.0.22631.6783 -
Microsoft Windows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.6783 -
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.8037 -
Microsoft Windows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.8037 -
Microsoft Windows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.1719 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.25973 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.25973 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.23074 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.23074 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.8957 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.8957 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.8511 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.8511 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.4893 -
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 ~ 10.0.25398.2207 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.32522 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.32522 -

II. Public POCs for CVE-2026-25188

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III. Intelligence Information for CVE-2026-25188

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Vendor Advisories for CVE-2026-25188 (1)

Same Patch Batch · Microsoft · 2026-03-10 · 78 CVEs total

CVE-2026-25177 8.8 HIGH Active Directory Domain Services Elevation of Privilege Vulnerability
CVE-2026-26118 8.8 HIGH Azure MCP Server Tools Elevation of Privilege Vulnerability
CVE-2026-21262 8.8 HIGH SQL Server Elevation of Privilege Vulnerability
CVE-2026-26106 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-23669 8.8 HIGH RPC Runtime Library Remote Code Execution Vulnerability
CVE-2026-23654 8.8 HIGH GitHub: Zero Shot SCFoundation Remote Code Execution Vulnerability
CVE-2026-26116 8.8 HIGH SQL Server Elevation of Privilege Vulnerability
CVE-2026-26115 8.8 HIGH SQL Server Elevation of Privilege Vulnerability
CVE-2026-24283 8.8 HIGH Multiple UNC Provider Kernel Driver Elevation of Privilege Vulnerability
CVE-2026-20967 8.8 HIGH System Center Operations Manager (SCOM) Elevation of Privilege Vulnerability
CVE-2026-26114 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-26110 8.4 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2026-26109 8.4 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-26113 8.4 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2026-26105 8.1 HIGH Microsoft SharePoint Server Spoofing Vulnerability
CVE-2026-26148 8.1 HIGH Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability
CVE-2026-26111 8.0 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-25173 8.0 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-25172 8.0 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-24291 7.8 HIGH Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege Vulnerability

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1607
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2026-25188

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