8.1

CVE-2026-78450

Medienbericht

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

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1809 HwPlatform x64 Version < 10.0.17763.9245
Microsoft ≫ Windows 10 1809 HwPlatform x86 Version < 10.0.17763.9245
Microsoft ≫ Windows Server 2019 HwPlatform x64 Version < 10.0.17763.9245
Microsoft ≫ Windows Server 2022 HwPlatform x64 Version < 10.0.20348.5622
Microsoft ≫ Windows Server 2025 HwPlatform x64 Version < 10.0.26100.33438
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.52% 0.424
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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VulnDex Intel
Media Report
08.09.2026 20:38
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78450
Vendor Advisory