CVE-2026-96202 – Windows Raw Image Extension Remote Code Execution Vulnerability

Microsoft has identified a Critical Remote Code Execution (RCE) vulnerability in the Windows Raw Image Extension that could allow an unauthorized attacker to execute malicious code on an affected system. The vulnerability involves a heap-based buffer overflow that can be triggered when a user opens a specially crafted file. An attacker could exploit this weakness to compromise system confidentiality, integrity, and availability. Although exploitation is currently considered less likely, the vulnerability carries a high potential impact because attackers do not require existing privileges, and exploitation has low attack complexity.

CVSS SCORE: 8.8

SEVERITY: Critical

Threat

This vulnerability creates a significant security risk for organizations using affected versions of Windows 10.

An attacker could exploit the Windows Raw Image Extension by convincing a user to open a maliciously crafted file. Successful exploitation could allow the attacker to execute unauthorized code on the targeted system.

The vulnerability is particularly concerning because:

• No privileges required: Attackers do not need an existing account or elevated permissions.
• Low attack complexity: Exploitation does not require complex conditions.
• User interaction required: A user must open a specially crafted file to trigger the vulnerability.
• High security impact: Successful exploitation could compromise confidentiality, integrity, and availability.

The combination of remote attack potential and low exploitation complexity makes this vulnerability a serious concern for enterprise environments.

Exploits

Microsoft has classified this vulnerability as Exploitation Less Likely.

• Actively Exploited: No.
• Publicly Disclosed: No.
• Exploit Code Maturity: Unproven.
• Public Proof-of-Concept (PoC): No confirmed information about publicly available PoC exploit code.
• Zero-Day Exploitation: No confirmed zero-day exploitation.

Although there is no confirmed active exploitation, the vulnerability could become an attractive target if reliable exploitation techniques emerge.

Technical Summary

CVE-2026-96202 is a heap-based buffer overflow vulnerability (CWE-122) affecting the Microsoft Windows Raw Image Extension.

A heap-based buffer overflow occurs when an application writes more data into a memory buffer than it can safely accommodate. This can corrupt adjacent memory and potentially allow an attacker to influence application behavior or execute malicious code.

In this case, the vulnerability exists within the Windows Raw Image Extension, which is responsible for handling supported RAW image files.

An attacker can exploit the vulnerability by creating a specially crafted file designed to trigger the memory corruption condition.

The attack requires the targeted user to open the malicious file. Once the file is processed, the vulnerability could allow unauthorized code execution.

The vulnerability has the following technical characteristics:

• Attack Vector: Network (AV:N).
• Attack Complexity: Low (AC:L).
• Privileges Required: None (PR:N).
• User Interaction: Required (UI:R).
• Scope: Unchanged (S:U).
• Confidentiality Impact: High.
• Integrity Impact: High.
• Availability Impact: High.

Successful exploitation could allow attackers to execute malicious instructions, access sensitive information, modify system data, or disrupt normal operations.

The combination of memory corruption and remote code execution makes this vulnerability particularly dangerous when users interact with untrusted files.

Exploitability

The vulnerability affects the Windows Raw Image Extension on the following systems:

• Windows 10 for x64-based systems.
• Windows 10 Version 1607 (32-bit and x64).
• Windows 10 Version 1809 (32-bit, x64, ARM64, and HoloLens).
• Windows 10 Version 21H2 (32-bit, x64, and ARM64).

An attacker could exploit the vulnerability by persuading a user to open a specially crafted file.

No prior privileges are required, but user interaction is necessary.

Microsoft rates successful exploitation as Less Likely.

Business Impact

This vulnerability presents a serious risk to organizations because a malicious file could become an entry point for unauthorized code execution.

If successfully exploited, potential business consequences include:

• Sensitive Data Exposure: Attackers could gain unauthorized access to confidential business information, customer records, or sensitive files.
• System Compromise: Malicious code execution could allow attackers to interfere with affected applications and systems.
• Operational Disruption: Exploitation could interrupt business processes, reduce system availability, or affect employee productivity.
• Data Manipulation: Attackers could potentially modify or corrupt important business information.
• Financial and Reputational Damage: A successful compromise could result in incident response costs, operational losses, and reduced customer confidence.

The biggest danger is that an ordinary file-opening action could turn into a serious security incident.

Organizations with large numbers of Windows endpoints may face increased exposure because users routinely receive and open files from external sources.

Workaround

Microsoft has not identified any official workarounds or mitigations for this vulnerability.

Until the security update can be deployed, organizations should consider these precautionary measures:

• Avoid opening RAW image files from unknown or untrusted sources.
• Educate employees about suspicious files and unexpected attachments.
• Restrict unnecessary use of the Windows Raw Image Extension where operationally feasible.
• Monitor endpoints for suspicious activity associated with unexpected file execution.

These precautions may reduce exposure but do not eliminate the underlying vulnerability.

Urgency

Critical Severity – Prioritize Security Patch Deployment

CVE-2026-96202 requires priority attention because it carries a Critical severity rating and a CVSS score of 8.8.

Although Microsoft currently considers exploitation less likely and reports no active exploitation, the vulnerability creates a potentially serious remote code execution risk.

Attackers require no existing privileges, and exploitation complexity is low. The primary condition is that a user must open a specially crafted file.

Organizations should prioritize deploying the official security update across affected Windows 10 systems.

Security teams should identify vulnerable endpoints, validate the update in their environments, and schedule deployment as soon as practical.

Restart Requirement: Maybe. A system restart may be necessary depending on the affected environment.

Known Issues: None reported.

The longer a critical remote code execution vulnerability remains unpatched, the longer attackers have an opportunity to turn a malicious file into a business security incident.