CVE-2026-88186
HighCVSS 8.8Summary
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Risk Assessment
Opening a malicious Word document can lead to arbitrary code execution in the user's context, posing a serious risk to the organization.
Recommendation
Update Microsoft Office to the latest version and exercise caution when opening documents from untrusted sources.
Other vulnerabilities in Microsoft Office Word
See all- CVE-2026-97001High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- CVE-2026-96996High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- CVE-2026-96995High
Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally.
- CVE-2026-88210High
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
- CVE-2026-88202High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. The issue stems from improper memory handling during document processing.
- CVE-2026-88185High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-88150High
A use of uninitialized resource vulnerability in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-83891High
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-70302High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-70301High
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS