Microsoft Office Long Term Servicing Channel vulnerabilities

CVE-2026-21259 [HIGH] CWE-122 CVE-2026-21259: Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate priv Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.

CVE-2026-26108 [HIGH] CWE-122 CVE-2026-26108: Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-42831 [HIGH] CWE-122 CVE-2026-42831: 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-2025-62557 [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-2025-47994 [HIGH] CWE-502 CVE-2025-47994: Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate pri Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally.

CVE-2025-47167 [HIGH] CWE-843 CVE-2025-47167: 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-2026-33114 [HIGH] CWE-822 CVE-2026-33114: Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute co Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2024-30101 [HIGH] CWE-416 CVE-2024-30101: Microsoft Office Remote Code Execution Vulnerability Microsoft Office Remote Code Execution Vulnerability

CVE-2025-62562 [HIGH] CWE-416 CVE-2025-62562: Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.

CVE-2025-30377 [HIGH] CWE-416 CVE-2025-30377: 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-2026-26110 [HIGH] CWE-843 CVE-2026-26110: 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-2026-20950 [HIGH] CWE-416 CVE-2026-20950: 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.

CVE-2026-26107 [HIGH] CWE-416 CVE-2026-26107: 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.

CVE-2026-23657 [HIGH] CWE-416 CVE-2026-23657: 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-2026-33095 [HIGH] CWE-416 CVE-2026-33095: 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-2026-32189 [HIGH] CWE-416 CVE-2026-32189: 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.

CVE-2026-40359 [HIGH] CWE-416 CVE-2026-40359: 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.

CVE-2026-40362 [HIGH] CWE-122 CVE-2026-40362: 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.

CVE-2026-32200 [HIGH] CWE-416 CVE-2026-32200: Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locall Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.

CVE-2026-32198 [HIGH] CWE-416 CVE-2026-32198: 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.