CVE-2023-24943: Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-09 · updated 2026-06-17
Weakness: CWE-122

Description

Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

Affected products

Microsoft Windows 10 Version 1507: before 10.0.10240.19926 — fixed in 10.0.10240.19926
Microsoft Windows 10 1607: before 10.0.14393.5921 — fixed in 10.0.14393.5921
Microsoft Windows 10: before 10.0.17763.4377 — fixed in 10.0.17763.4377
Microsoft Windows 10 20H2: before 10.0.19042.2965 — fixed in 10.0.19042.2965
Microsoft Windows 10: before 10.0.19044.2965 — fixed in 10.0.19044.2965
Microsoft Windows 10: before 10.0.19045.2965 — fixed in 10.0.19045.2965
Microsoft Windows 11 21H2: before 10.0.22000.1936 — fixed in 10.0.22000.1936
Microsoft Windows 11: before 10.0.22000.1702 — fixed in 10.0.22000.1702
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows Server 2019: all versions
Microsoft Windows Server 2022: all versions
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.19926 — fixed in 10.0.10240.19926
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.5921 — fixed in 10.0.14393.5921
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.4377 — fixed in 10.0.17763.4377
Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19042.2965 — fixed in 10.0.19042.2965
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.2965 — fixed in 10.0.19044.2965
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.2965 — fixed in 10.0.19045.2965
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.1936 — fixed in 10.0.22000.1936
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.1702 — fixed in 10.0.22621.1702
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26519 — fixed in 6.1.7601.26519
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22070 — fixed in 6.0.6003.22070
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24266 — fixed in 6.2.9200.24266
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20969 — fixed in 6.3.9600.20969
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5921 — fixed in 10.0.14393.5921
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4377 — fixed in 10.0.17763.4377
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1726 — fixed in 10.0.20348.1726

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19926; Microsoft Windows 10 1607 10.0.14393.5921; Microsoft Windows 10 10.0.17763.4377; Microsoft Windows 10 20H2 10.0.19042.2965; Microsoft Windows 10 10.0.19044.2965; Microsoft Windows 10 10.0.19045.2965; Microsoft Windows 11 21H2 10.0.22000.1936; Microsoft Windows 11 10.0.22000.1702; Microsoft Windows 10 Version 1507 10.0.10240.19926; Microsoft Windows 10 1607 10.0.14393.5921; Microsoft Windows 10 10.0.17763.4377; Microsoft Windows 10 20H2 10.0.19042.2965. Check the vendor advisory for mitigations.

References

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