CVE-2026-88186

Summary

A heap-based buffer overflow in Microsoft Word allows remote attackers to execute arbitrary code when processing malicious documents, potentially leading to full system compromise.

Exploitability

Exploitation requires a user to open a specially crafted Word document, making it moderately difficult but achievable through social engineering or phishing campaigns.

Blast radius

If exploited, this vulnerability could affect millions of users running Microsoft Office 2021 or 2024, with potential for widespread remote code execution across enterprise networks.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Deploy the Microsoft Office 2021 Security Update KB5043897 or Office 2024 update released in June 2024 to address this vulnerability.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.