CVE-2026-69530

high Microsoft
CVSS v3 Base Score
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: September 8, 2026 (2 days ago)
Last Modified: September 9, 2026
Vendor: Microsoft
Source: MITRE

Description

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

CWE

CWE-416

Affected Products

Microsoft Windows 10 Version 1809Microsoft Windows Server 2019Microsoft Windows Server 2019 (Server Core installation)Microsoft Windows Server 2022Microsoft Windows Server 2025Microsoft Windows Server 2025 (Server Core installation)

References

🔗 msrc.microsoft.com