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Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.
Use CWE-303, Microsoft vendor hub and Exchange Server product page to widen CVE-2025-53782 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2025-59249, CVE-2025-53786 and CVE-2025-64666 for nearby disclosures in the same product family. Additional editorial context is available in Weekly Security Roundup: Navigating the April 2026 Threat Landscape and Critical Framework Exploits.