CVE-2025-54910
HighCVSS 8.4Exploitation Probability (EPSS)
Low risk48th percentile - higher than 48% of all known CVEs
Summary
A heap-based buffer overflow in Microsoft Office allows an unauthenticated attacker to execute code locally. The vulnerability is triggered by specially crafted input.
Risk Assessment
An attacker could achieve arbitrary code execution in the context of the user opening a malicious document, risking full workstation compromise.
Recommendation
Apply the latest Microsoft Office security updates and enforce a zero-trust approach to documents from external sources.
Other vulnerabilities in Microsoft Office
See all- 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-2025-53732High
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-49702High
A vulnerability in Microsoft Office related to access of resource using incompatible type ('type confusion') allows an unauthorized attacker to execute code locally.
- CVE-2025-49697High
A heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-49696High
An out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
- CVE-2025-49695High
A use after free vulnerability in Microsoft Office 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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS