Security News

Vulnerability Found in Kaspersky Endpoint Security Now Patched

Security Week · 1 Sept 2026

Key Takeaway Regularly check that your security software—including endpoint protection tools—is fully updated, since even the products designed to protect you can contain flaws that need prompt patching.

A vulnerability in Kaspersky's Endpoint Security product, referred to as 'HardBreacher' and linked to research from a group called Nightmare Eclipse, has come to light. According to reporting from SecurityWeek, Kaspersky confirmed that it has already released a patch to address the issue affecting its Endpoint Security software.

Endpoint security tools are widely relied upon by businesses of all sizes, including small and medium enterprises, to detect and block malware, ransomware, and other threats on company devices. When a vulnerability is found in the very software meant to protect systems, it highlights that no security tool is immune from flaws, and timely patching remains essential to keeping protections effective.

While specific technical details of the exploit have not been made public in full, the key point for businesses is that a fix is already available. Organisations using Kaspersky Endpoint Security should ensure they are running the most current, patched version of the software to close off this vulnerability.

Kaspersky vulnerability endpoint security patch management software update

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