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HardBreacher PoC Claims Kaspersky Endpoint Security Zero-Day Privilege Escalation on ...

Published

31 August 2026

Topic

opportunities

Sectors

Cybersecurity

Geography

United States

Source

Read at cybersecuritynews.com

Verified

Fusion42 · 1 September 2026 · Fusion42 review

A public proof of concept claims a zero-day local privilege escalation vulnerability in Kaspersky Endpoint Security on Windows 11, potentially allowing low-privileged users to gain elevated rights and disrupt endpoint protection, though the flaw remains unverified and unconfirmed by Kaspersky.

This Wire brief sits within Fusion42's coverage of Cybersecurity.

◆ The Wire takeaway

Kaspersky users must urgently verify if their endpoints are vulnerable and prepare to act if official patches do not arrive swiftly. You must prioritise detecting unusual Kaspersky process behaviour and DLL creations to prevent exploitation that could disable your defences.

Coverage

1 source · 31 Aug 2026

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Cybersecurityzero-dayendpoint-securityprivilege-escalationwindows-11kaspersky