CVE-2026-78450 – Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
CVSS 8.1
IMPORTANT
Critical - Same Day Deployment
"A specially crafted network packet could turn a memory flaw into remote code execution, with no authentication or user action required."
A use-after-free vulnerability in the Windows Reliable Multicast Transport Driver (RMCAST) could allow an unauthorized remote attacker to execute code on an affected Windows system. Exploitation requires sending a specially crafted packet to an affected service and successfully winning a race condition. The vulnerability is not publicly disclosed and is not known to be exploited.
Key Details
- Attack Vector
- Network
- Attack Complexity
- High
- Privileges Required
- None
- User Interaction
- None
- CWE Classification
- CWE-416
Patch this CVE on all your endpoints in under 5 minutes.
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