Cyber Posture

CVE-2025-21307

Critical

Published: 14 January 2025

Published
14 January 2025
Modified
24 January 2025
KEV Added
—
Patch
—
CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.1077 93.4th percentile
Risk Priority 26 60% EPSS · 20% KEV · 20% CVSS

Description

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

Security Summary

CVE-2025-21307 is a Remote Code Execution vulnerability affecting the Windows Reliable Multicast Transport Driver (RMCAST). Published on January 14, 2025, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), classifying it as critical severity and linking it to CWE-416.

The vulnerability enables remote exploitation over the network by unauthenticated attackers requiring no privileges or user interaction, with low attack complexity. Successful exploitation grants attackers remote code execution capabilities, resulting in high impacts to confidentiality, integrity, and availability.

The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21307 details mitigation strategies and available patches.

Details

CWE(s)
CWE-416NVD-CWE-noinfo

Affected Products

microsoft
windows 10 1507
≤ 10.0.10240.20890 · ≤ 10.0.10240.20890
microsoft
windows 10 1607
≤ 10.0.14393.7699 · ≤ 10.0.14393.7699
microsoft
windows 10 1809
≤ 10.0.17763.6775 · ≤ 10.0.17763.6775
microsoft
windows 10 21h2
≤ 10.0.19044.5371
microsoft
windows 10 22h2
≤ 10.0.19045.5371
microsoft
windows 11 22h2
≤ 10.0.22621.4751
microsoft
windows 11 23h2
≤ 10.0.22631.4751
microsoft
windows 11 24h2
≤ 10.0.26100.2894
microsoft
windows server 2008
all versions, r2
microsoft
windows server 2012
all versions, r2
+5 more product configuration(s) — see NVD for full list

References