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Vulnerabilities of Microsoft Office Online Server

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CVE Summary Score Published
CVE-2025-59231 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 7.8 High Oct 14, 2025
CVE-2025-54900 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-54904 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-54903 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-54902 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-54898 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-54896 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Sep 9, 2025
CVE-2025-53739 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 7.8 High Aug 12, 2025
CVE-2025-53737 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 12, 2025
CVE-2025-53735 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 12, 2025
CVE-2025-53741 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 12, 2025
CVE-2025-53759 Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 12, 2025
CVE-2025-49697 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 High Jul 8, 2025
CVE-2025-49711 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Jul 8, 2025
CVE-2025-48812 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally 5.5 Medium Jul 8, 2025
CVE-2025-47165 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-30383 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 7.8 High May 13, 2025
CVE-2025-30381 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-30379 Release of invalid pointer or reference in Microsoft Office Excel allows an unauthorized attacker to execute code… 7.8 High May 13, 2025
CVE-2025-30376 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-30375 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 7.8 High May 13, 2025
CVE-2025-29979 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-29977 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-26642 Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Apr 8, 2025
CVE-2025-27751 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Apr 8, 2025

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