by Kastro
Paper/Archive/CVE-2025-21307

CVE-2025-21307

Microsoft Windows 10 Version 1507 — Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 80.1.801 × 2016.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

Affected

ProductAffectedFixed inSource
Windows 10 Version 150710.0.10240.0 – < 10.0.10240.2089010.0.10240.20890CNA
Windows 10 Version 160710.0.14393.0 – < 10.0.14393.769910.0.14393.7699CNA
Windows 10 Version 180910.0.17763.0 – < 10.0.17763.677510.0.17763.6775CNA
Windows 10 Version 21H210.0.19044.0 – < 10.0.19044.537110.0.19044.5371CNA
Windows 10 Version 22H210.0.19045.0 – < 10.0.19045.537110.0.19045.5371CNA
Windows 11 version 22H210.0.22621.0 – < 10.0.22621.475110.0.22621.4751CNA
Windows 11 version 22H310.0.22631.0 – < 10.0.22631.475110.0.22631.4751CNA
Windows 11 Version 23H210.0.22631.0 – < 10.0.22631.475110.0.22631.4751CNA
Windows 11 Version 24H210.0.26100.0 – < 10.0.26100.289410.0.26100.2894CNA
Windows Server 2008 R2 Service Pack 16.1.7601.0 – < 6.1.7601.275206.1.7601.27520CNA
Windows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 – < 6.1.7601.275206.1.7601.27520CNA
Windows Server 2008 Service Pack 26.0.6003.0 – < 6.0.6003.230706.0.6003.23070CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2025-21307