CVE-2026-44822 Microsoft Excel Information Disclosure Vulnerability

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CVE-2026-32199 Microsoft Excel Remote Code Execution Vulnerability

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CVE-2026-21259

CVE-2026-21259 is a heap-based buffer overflow in Microsoft Excel (Office) that enables local privilege escalation. Multiple sources (MSRC advisory, CNVD, CIRCL sightings, KB entries) confirm Excel as the affected product and indicate that Microsoft released February 2026 security updates (e.g., ...