CVE-2023-43896

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

May 2, 2026

Last Seen

May 2, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Microsoft Blocks Macrium Reflect Driver in Windows 11 Updates54.9

On May 2, 2026, Microsoft confirmed that its recent Windows 11 updates (KB5083769 and KB5083631) block the Macrium Reflect driver, psmounterex.sys, as part of its vulnerable driver blocklist. This action is a response to the discovery of a vulnerability (CVE-2023-43896) in versions 8.1.7544 and belo...