CVE-2026-69634

Summary

A heap-based buffer overflow in Windows iSCSI allows remote attackers to execute arbitrary code with high privileges. This vulnerability affects the iSCSI initiator component and can be exploited over a network without authentication.

Exploitability

Exploitation is relatively straightforward as it requires only network access to the affected iSCSI service, with no authentication needed for initial exploitation.

Blast radius

The impact could be severe across enterprise environments that use iSCSI storage, potentially allowing attackers to gain full system compromise on vulnerable Windows hosts.

Detection

Monitor for unusual network traffic patterns to iSCSI ports (typically TCP 3260) and check Windows Event Logs for iSCSI-related errors or crashes in the iSCSI initiator service.

Prioritized remediation

Apply the latest Windows updates including KB5042819 or later, which contain the patched iSCSI implementation.

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