[German]Microsoft has unexpectedly released an emergency update (hotfix) for Windows 11 24H2 and 25H2 on March 13, 2026. This security update is intended to address a security issue in the RRAS management tool (Windows Routing and Remote Access Service). As far as I can tell, it is only available via the Hotpatch channel.
I became aware of this issue through the following post on neowin.net, which was documented by Microsoft on this website.
Regarding the KB5084597 hotfix for Windows 11 24H2–25H2, Microsoft states that a security issue in the management tool for the Windows "Routing and RAS" (RRAS) service has been resolved. The issue stemmed from the fact that, when connecting to a malicious remote server, an attacker could disrupt the tool or execute code on the device. Three vulnerabilities CVE-2026-25172, CVE-2026-25173, and CVE-2026-26111 have been fixed.
