Microsoft fixes under-attack privilege-escalation holes in Hyper-V

Patch Tuesday: Microsoft and other vendors released fixes for multiple high‑risk vulnerabilities — notably three Hyper‑V privilege‑escalation zero‑days (CVE‑2025‑21333/21334/21335) reported as exploited in the wild, several 9.8-rated remote code execution flaws (including OLE, PGM and NTLMv1 issues), and Excel/Remote Desktop vulnerabilities likely to be weaponized; Adobe, Cisco and SAP also issued important patches. Administrators are advised to prioritize patching and apply recommended mitigations (for example, setting LmCompatibilityLevel to 5 to block NTLMv1) to address active and high‑impact issues.