curl: Use-after-free of the internal multi->admin easy handle via the documented CURLMOPT_NOTIFYFUNCTION callback

Summary: curlmultiinit creates an internal easy handle multi-admin and marks it state.internal = TRUE lib/multi.c:248. The CURLMOPTNOTIFYFUNCTION callback is handed that internal handle on CURLMNOTIFYINFOREAD lib/multintfy.c:109, and the option documentation invites callbacks to remove and clean ...

CISA Urges Endpoint Management System Hardening After Cyberattack Against US Organization

CISA is aware of malicious cyber activity targeting endpoint management systems of U.S. organizations based on the March 11, 2026 cyberattack against U.S.-based medical technology firm Stryker Corporation, which affected their Microsoft environment.1 To defend against similar malicious cyber...