CVE-2018-8397: Windows GDI memory handling remote code execution

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 19 September 2026. Confidence: medium.

high priorityCVSS 8.8 with network reachability and full code execution impact, plus a very high EPSS score, outweighs the lack of KEV listing and documented exploitation.

What it is

CVE-2018-8397 is a remote code execution flaw in how the Windows Graphics Device Interface (GDI) handles objects in memory, described by Microsoft as a GDI+ Remote Code Execution Vulnerability. It affects Windows Server 2008, Windows 7 and Windows Server 2008 R2. The record gives no root-cause detail beyond memory handling, so the exact faulty operation is not specified.

Impact

Successful exploitation lets an attacker execute arbitrary code in the context of the affected process, giving full control of confidentiality, integrity and availability per the CVSS vector. The attacker gains code execution on the target host rather than only a crash or information leak.

Attack surface

The vector is network-reachable with no privileges required, but user interaction is required, consistent with a crafted file or content that the victim must open or render. No authentication is needed on the attacker's side; the victim's action is the gate.

Exploitation

CISA KEV does not list this CVE, and the references are only vendor advisory, patch and third-party VDB entries with no exploit or PoC tags. EPSS is high at roughly 0.679 (99.3rd percentile), indicating elevated predicted exploitation activity despite the absence of documented in-the-wild use.

What to do

• Apply the Microsoft security update referenced in the MSRC advisory for CVE-2018-8397 on all affected Windows 7, Windows Server 2008 and Windows Server 2008 R2 systems.
• Prioritize patching internet-facing and user-workstation systems, since exploitation requires a victim to open or render crafted content.
• Where these platforms are still in use, restrict untrusted file and content handling and enforce attachment and download controls at mail and web gateways.
• Plan migration off Windows 7 and Windows Server 2008/2008 R2, which are past end of support and no longer receive routine fixes.
• Limit the impact of code execution by running users with least privilege and applying application control where feasible.

Detection

• Monitor for unexpected child processes spawned by GDI-related or graphics-rendering applications, which can indicate code execution via crafted content.
• Alert on crashes or abnormal terminations in processes that render untrusted images or documents, especially repeated events tied to the same file source.
• Review endpoint telemetry for suspicious file opens from email attachments, downloads or removable media preceding process creation anomalies.
• Track patch state of Windows 7 and Server 2008/2008 R2 hosts to find systems still exposed to this and other unsupported-platform flaws.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.