CVE-2025-10263: ARM CPU Privilege Escalation Across Multiple Processor Families

**Executive Summary:** CVE-2025-10263 is a critical (CVSS 9.1) privilege-escalation vulnerability impacting many ARM processor families (Cortex-X, Cortex-A, Neoverse, ARM C-class) that may permit low-privilege code to write to higher exception-level resources, risking kernel isolation, hypervisor escapes, TrustZone/TEE compromise, and cloud multi-tenancy isolation; the report describes affected models, attack scenarios, impact assessment, detection considerations, and recommended mitigations and patches.