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Known vulnerabilities in Microsoft Office LTSC 2021

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CVE Summary Score Published
CVE-2025-47994 Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally 7.8 High Jul 8, 2025
CVE-2025-47175 Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-47174 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-47173 Improper input validation in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-47171 Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally 6.7 Medium Jun 10, 2025
CVE-2025-47169 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-47168 Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally 7.8 High Jun 10, 2025
CVE-2025-47167 Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to… 8.4 High Jun 10, 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-2025-47164 Use after free in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 High Jun 10, 2025
CVE-2025-47953 Use after free in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 High Jun 10, 2025
CVE-2025-47162 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 High Jun 10, 2025
CVE-2025-47957 Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally 8.4 High Jun 10, 2025
CVE-2025-32705 Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-32704 Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally 8.4 High May 13, 2025
CVE-2025-30393 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High May 13, 2025
CVE-2025-30386 Use after free in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 High May 13, 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-2025-30377 Use after free in Microsoft Office allows an unauthorized attacker to execute code locally 8.4 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

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