CVE-2026-105598

Summary

A heap-based buffer overflow in Microsoft Office Access allows remote attackers to execute arbitrary code on vulnerable systems. This vulnerability is particularly concerning because it affects widely used Office applications and can be exploited over a network without user interaction.

Exploitability

Exploitation appears moderately difficult as it requires crafting a malicious file that triggers the buffer overflow during processing, but the attack surface is broad since Access files can be shared via email or network shares.

Blast radius

If exploited, this vulnerability could lead to widespread compromise of systems running affected Office versions, potentially allowing attackers to execute code with the privileges of the user who opens the malicious file.

Detection

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

Prioritized remediation

Deploy the Microsoft Office 2021 and Office 2024 updates that contain the fix for CVE-2026-105598, specifically the 2024 update released in March 2026 or later.

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