CVE-2026-40363
HighSummary
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Risk Assessment
An attacker can exploit this vulnerability to execute malicious code, potentially leading to data loss or system takeover.
Recommendation
It is recommended to update Microsoft Office to the latest version to mitigate this vulnerability.
Other vulnerabilities in Microsoft Office
See all- CVE-2026-42832High
Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.
- CVE-2026-42831High
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-40419High
A use after free vulnerability in Microsoft Office allows an authorized attacker to locally elevate privileges.
- CVE-2026-26134High
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
- CVE-2026-26110High
Microsoft Office has a vulnerability related to resource access using an incompatible type ('type confusion'), allowing an unauthorized attacker to execute code locally.
- CVE-2026-20953High
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-20952High
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2026-20943High
An untrusted search path vulnerability in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-62557High
A use after free vulnerability in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-62554High
A vulnerability in Microsoft Office related to access of resource using incompatible type ('type confusion') allows an unauthorized attacker to execute code locally.
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.