CVE-2026-21413: Raw Image Extension Remote Code Execution Vulnerability

Overview

Severity

Critical (CVSS 9.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Oct

Released

2026-10-13

EPSS Score

0.93% (percentile: 59.7%)

Description

Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.

FAQ

How could an attacker exploit this vulnerability? An attacker could exploit this vulnerability by convincing a user to navigate to a folder containing a specially crafted RAW image file. The vulnerability can be triggered when Windows generates a thumbnail or preview; the user does not need to open the file. Successful exploitation could allow remote code execution.

Affected Products (24)

Windows

• Raw Image Extension on Windows 10 Version 1607 for x64-based Systems
• Raw Image Extension on Windows 10 Version 1607 for 32-bit Systems
• Raw Image Extension on Windows 10 for x64-based Systems
• Raw Image Extension on Windows 10 for 32-bit Systems
• Raw Image Extension on Windows 10 Version 21H2 for x64-based Systems
• Raw Image Extension on Windows 10 Version 21H2 for ARM64-based Systems
• Raw Image Extension on Windows 10 Version 21H2 for 32-bit Systems
• Raw Image Extension on Windows 11 version 21H2 for ARM64-based Systems
• Raw Image Extension on Windows 11 version 21H2 for x64-based Systems
• Raw Image Extension on Windows 10 Version 20H2 for ARM64-based Systems
• Raw Image Extension on Windows 10 Version 20H2 for 32-bit Systems
• Raw Image Extension on Windows 10 Version 21H1 for 32-bit Systems
• Raw Image Extension on Windows 10 Version 21H1 for ARM64-based Systems
• Raw Image Extension on Windows 10 Version 21H1 for x64-based Systems
• Raw Image Extension on Windows 10 Version 1909 for ARM64-based Systems
• Raw Image Extension on Windows 10 Version 1909 for x64-based Systems
• Raw Image Extension on Windows 10 Version 1909 for 32-bit Systems
• Raw Image Extension on Windows 10 Version 1809 for HoloLens
• Raw Image Extension on Windows 10 Version 1809 for ARM64-based Systems
• Raw Image Extension on Windows 10 Version 1809 for x64-based Systems
• Raw Image Extension on Windows 10 Version 1809 for 32-bit Systems
• Raw Image Extension on Windows 11 version 26H2
• Raw Image Extension on Windows 11 Version 26H2 for ARM64-based Systems
• Raw Image Extension on Windows 11 Version 26H2 for x64-based Systems

Acknowledgments

Anonymous, Anonymous, Juan Pablo Lopez Yacubian

Revision History

• 2026-10-13: Information published.