CVE-2026-77496

Summary

A heap-based buffer overflow in Windows Imaging Component allows remote attackers to execute arbitrary code on affected systems. This vulnerability arises from insufficient bounds checking when processing image files, potentially enabling attackers to gain full system control.

Exploitability

Exploitation is moderately difficult requiring a user interaction via a malicious image file, with no special privileges needed for the initial attack vector.

Blast radius

The vulnerability could impact a wide range of Windows systems that process image files, particularly those exposed to untrusted content such as email attachments, web downloads, or network shares.

Detection

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

Prioritized remediation

Apply the Windows update KB5049731 or later to patch the heap overflow in Windows Imaging Component.

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