Microsoft confirmed a critical security vulnerability in Windows Defender, designated as CVE-2024-49071, which could allow unauthorized access to sensitive information indexed during global file searches. The vulnerability arose from inadequate restrictions on access to the search index for private documents. Despite the potential risk, there have been no known exploitations of this flaw, and an attacker would need some level of access to exploit it. Microsoft has resolved the issue through backend fixes and advises users that no action is necessary on their part.