CVE-2024-43622: Windows Telephony Service Remote Code Execution Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-12 · updated 2026-06-17
Weakness: CWE-122

Description

Windows Telephony Service Remote Code Execution Vulnerability

Affected products

Microsoft Windows 10 Version 1507: before 10.0.10240.20826 — fixed in 10.0.10240.20826
Microsoft Windows 10 1607: before 10.0.14393.7515 — fixed in 10.0.14393.7515
Microsoft Windows 10: before 10.0.17763.6532 — fixed in 10.0.17763.6532
Microsoft Windows 10: before 10.0.19044.5131 — fixed in 10.0.19044.5131
Microsoft Windows 10: before 10.0.19045.5131 — fixed in 10.0.19045.5131
Microsoft Windows 11: before 10.0.22621.4460 — fixed in 10.0.22621.4460
Microsoft Windows 11: before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: before 10.0.14393.7515 — fixed in 10.0.14393.7515
Microsoft Windows Server 2019: before 10.0.17763.6532 — fixed in 10.0.17763.6532
Microsoft Windows Server 2022: before 10.0.20348.2849 — fixed in 10.0.20348.2849
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1251 — fixed in 10.0.25398.1251
Microsoft Windows Server 2025: before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20826 — fixed in 10.0.10240.20826
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.7515 — fixed in 10.0.14393.7515
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.6532 — fixed in 10.0.17763.6532
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.5131 — fixed in 10.0.19044.5131
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.5131 — fixed in 10.0.19045.5131
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4460 — fixed in 10.0.22621.4460
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4460 — fixed in 10.0.22631.4460
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.2314 — fixed in 10.0.26100.2314
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.27415 — fixed in 6.1.7601.27415
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22966 — fixed in 6.0.6003.22966
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.25165 — fixed in 6.2.9200.25165
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22267 — fixed in 6.3.9600.22267
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.7515 — fixed in 10.0.14393.7515
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.6532 — fixed in 10.0.17763.6532

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20826; Microsoft Windows 10 1607 10.0.14393.7515; Microsoft Windows 10 10.0.17763.6532; Microsoft Windows 10 10.0.19044.5131; Microsoft Windows 10 10.0.19045.5131; Microsoft Windows 11 10.0.22621.4460; Microsoft Windows 11 10.0.22631.4460; Microsoft Windows 11 10.0.26100.2314; Microsoft Windows Server 2016 10.0.14393.7515; Microsoft Windows Server 2019 10.0.17763.6532; Microsoft Windows Server 2022 10.0.20348.2849; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1251. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43622

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