CVE-2026-3220

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

April 29, 2026

Last Seen

April 29, 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

BlueHammer Zero-Day Exploit Released, Exposing Windows Users to Privilege Escalation66.6

A security researcher, known as Chaotic Eclipse, has publicly released exploit code for a zero-day vulnerability in Windows, dubbed BlueHammer, allowing local privilege escalation to SYSTEM or elevated administrator privileges. The exploit targets a flaw in the Windows Defender update mechanism and...