CVE-2025-21307

high-risk
Published 2025-01-14

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

Do I need to act?

!
10.8% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Vendors

63
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 20/34 · Moderate