Microsoft 365 Apps For Enterprise vulnerabilities

CVE-2026-64904 [HIGH] CWE-843 CVE-2026-64904: 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-2026-64903 [HIGH] CWE-122 CVE-2026-64903: Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code l Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2026-64905 [HIGH] CWE-126 CVE-2026-64905: Buffer over-read in Microsoft Office Word allows an unauthorized attacker to execute code locally. Buffer over-read in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2026-68806 [HIGH] CWE-787 CVE-2026-68806: Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code locall Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-64911 [HIGH] CWE-122 CVE-2026-64911: Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code l Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.

CVE-2026-55036 [HIGH] CWE-126 CVE-2026-55036: Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-55025 [HIGH] CWE-843 CVE-2026-55025: Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an un Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-55022 [HIGH] CWE-843 CVE-2026-55022: 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-2026-55949 [HIGH] CWE-908 CVE-2026-55949: Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute c Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-55024 [HIGH] CWE-843 CVE-2026-55024: Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an un Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2025-59222 [HIGH] CWE-416 CVE-2025-59222: 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-2025-59243 [HIGH] CWE-416 CVE-2025-59243: 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-2025-49700 [HIGH] CWE-416 CVE-2025-49700: 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-2025-53734 [HIGH] CWE-416 CVE-2025-53734: Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally.

CVE-2025-53730 [HIGH] CWE-416 CVE-2025-53730: Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally.

CVE-2025-59238 [HIGH] CWE-416 CVE-2025-59238: 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-2025-59226 [HIGH] CWE-416 CVE-2025-59226: Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Visio allows an unauthorized attacker to execute code locally.

CVE-2026-44817 [HIGH] CWE-843 CVE-2026-44817: Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an un Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-45469 [HIGH] CWE-122 CVE-2026-45469: Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2021-40481 [HIGH] CVE-2021-40481: Microsoft Office Visio Remote Code Execution Vulnerability Microsoft Office Visio Remote Code Execution Vulnerability