cve 2025 64663

CVE-2025-64663 is an elevation-of-privilege vulnerability in Microsoft Custom Question Answering, a knowledge-base and conversational Q&A service. The advisory from Microsoft includes a confidence metric indicating how much technical detail is corroborated, but the public record is terse, lacking a full exploit chain, proof-of-concept code, or low-level root-cause details. Security teams are advised to prioritize based on confidence and apply standard mitigation discipline while awaiting more information. This CVE is relevant for administrators and security professionals managing Microsoft AI services and needing to assess and respond to privilege escalation risks.