CVE-2026-69789: high-severity vulnerability in Microsoft Windows 10 Version 1607
Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.4%
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 10 Version 1607Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 21H2Microsoft · Windows 10 Version 22H2Microsoft · Windows 11 version 23H2Microsoft · Windows 11 Version 24H2Microsoft · Windows 11 Version 25H2Microsoft · Windows 11 version 26H1Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2012 R2 (Server Core installation)Microsoft · Windows Server 2012 (Server Core installation)Microsoft · Windows Server 2016Microsoft · Windows Server 2016 (Server Core installation)Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server 2025Microsoft · Windows Server 2025 (Server Core installation)Related CVEs — Microsoft Windows 10 Version 1607
In the same product, most dangerous first.
CVE-2021-34527HIGHWindows Print Spooler Remote Code Execution VulnerabilityEPSS 99.8%KEVCVE-2024-21412HIGHInternet Shortcut Files Security Feature Bypass VulnerabilityEPSS 99.4%KEVCVE-2022-30190HIGHMicrosoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution VulnerabilityEPSS 99.2%KEVCVE-2023-36884HIGHWindows Search Remote Code Execution VulnerabilityEPSS 98.9%KEVCVE-2021-40444HIGHMicrosoft MSHTML Remote Code Execution VulnerabilityEPSS 97.8%KEVCVE-2023-36025HIGHWindows SmartScreen Security Feature Bypass VulnerabilityEPSS 88.1%KEV