Security November 2026 Latest record Windows Composite Image File System Information Disclosure Vulnerability Recorded 10 Nov 2026 at 18:32 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position.
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CVE Microsoft Security Response Center
Windows Composite Image File System Information Disclosure Vulnerability Improper access control in Windows Composite Image File System allows an authorized attacker to disclose information locally.
What it said
CVE CVE-2026-112809
Severity Important
CVSS base score 5.5
CVSS vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Impact Information Disclosure
Exploitation detected No known exploitation (MSRC assessment)
Publicly disclosed No (MSRC assessment)
Exploitability Exploitation Less Likely
Component Windows Composite Image File System
Weakness Not stated
Issued by Microsoft
Customer action Required: follow the MSRC remediation guidance
Affected products Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems
Updates that fix it KB5132059: Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems (restart required)
CISA KEV Not listed in the collected catalog
EPSS No EPSS score collected
Public detection template No Nuclei template listed
Published 10 Nov 2026 08:00 UTC
Last revised 10 Nov 2026 08:00 UTC
Revision note Information published.
Source evidence when recorded
Microsoft security releases Complete at observationRead 10 Nov 2026 at 18:30 UTC
CISA KEV Complete at observationRead 10 Nov 2026 at 18:30 UTC
FIRST EPSS Complete at observationRead 10 Nov 2026 at 18:30 UTC
Public detection templates (Nuclei) Complete at observationRead 10 Nov 2026 at 18:30 UTC
Coverage describes the sources at this observation. A complete read then does not establish their current position.
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