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ExploitPublished

Nightmare Eclipse Drops Windows Zero-Day Exploit ‘ShieldBreak’

Source SecurityWeek

0
Severity
High

Rated High by Threat Radar from the SecurityWeek text

Data as of 13 Aug 2026, 20:37 UTC

What to do

AI-suggested

Users should monitor Microsoft advisories closely for updates and apply patches promptly once available. Since the exploit requires Microsoft Defender to be active, temporarily disabling Defender may mitigate risk but is not recommended without alternative protections. Detection rules published by security researchers can be used to identify attempts to exploit this vulnerability.

Description

Dropped on Patch Tuesday, the exploit allows any user to spawn a shell with System privileges. The post Nightmare Eclipse Drops Windows Zero-Day Exploit ‘ShieldBreak’ appeared first on SecurityWeek .

References

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