CVE-2026-54982 HIGH

CVE-2026-54982: Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

Vendor Microsoft
Product Windows 10 Version 1607
Weakness CWE-191
Published July 14, 2026
Last update July 24, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.

Key dates

02Disclosure timeline

July 14, 2026 CVE published
July 24, 2026 Record updated