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Exploited Added to CISA's list April 13, 2026

Microsoft Windows: Out-of-Bounds Read Vulnerability

What to do: Run Windows Update and restart the PC.

Affects
Microsoft Windows
Identifier
CVE-2023-36424
What it is
Microsoft Windows Common Log File System Driver contains an out-of-bounds read vulnerability that could allow a threat actor for privileges escalation
Official guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
National Vulnerability Database entry

"Exploited" means CISA has evidence attackers are using this flaw. Being on the list does not mean your device was attacked; it means the update matters.