Microsoft Office Ltsc 2021 vulnerabilities

CVE-2023-33153 [HIGH] CWE-416 CVE-2023-33153: Microsoft Outlook Remote Code Execution Vulnerability Microsoft Outlook Remote Code Execution Vulnerability

CVE-2023-36413 [MEDIUM] CVE-2023-36413: Microsoft Office Security Feature Bypass Vulnerability Microsoft Office Security Feature Bypass Vulnerability

CVE-2025-47162 [HIGH] CWE-122 CVE-2025-47162: Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code local Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2022-34717 [HIGH] CVE-2022-34717: Microsoft Office Remote Code Execution Vulnerability Microsoft Office Remote Code Execution Vulnerability

CVE-2026-21511 [HIGH] CWE-502 CVE-2026-21511: Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to per Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

CVE-2025-53740 [HIGH] CWE-416 CVE-2025-53740: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-53731 [HIGH] CWE-416 CVE-2025-53731: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-49697 [HIGH] CWE-122 CVE-2025-49697: Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code local Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-53784 [HIGH] CWE-416 CVE-2025-53784: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2025-62557 [HIGH] CWE-416 CVE-2025-62557: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2026-35436 [HIGH] CWE-1220 CVE-2026-35436: Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally. Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.

CVE-2026-40420 [HIGH] CWE-284 CVE-2026-40420: Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally. Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.

CVE-2025-47164 [HIGH] CWE-416 CVE-2025-47164: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-49695 [HIGH] CWE-416 CVE-2025-49695: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-47953 [HIGH] CWE-641 CVE-2025-47953: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2026-40366 [HIGH] CWE-416 CVE-2026-40366: Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an una Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2026-40367 [HIGH] CWE-822 CVE-2026-40367: Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an una Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2026-45463 [HIGH] CWE-121 CVE-2026-45463: Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execut Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2026-45456 [HIGH] CWE-843 CVE-2026-45456: Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthor Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2025-59236 [HIGH] CWE-416 CVE-2025-59236: Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.