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#CVE-2026-55040

2 stories taggedCVE-2026-55040.

A network diagram displayed on a security operations center screen showing attack chain progression through server nodes, with two highlighted vulnerabilities c
Vulnerabilities

Hackers Are Now Chaining Two SharePoint Bugs to Take Over Servers

A public proof-of-concept turned into live attacks within a day, and researchers are watching the full two-step break-in play out in honeypots.

3 min read
A SharePoint server interface with authentication mechanism broken, showing unauthorized access pathways and AI chain-attack visualization flowing through multi
Vulnerabilities

SharePoint Flaw Lets Attackers Log In as Anyone. Microsoft Patches CVE-2026-55040.

Researchers used an AI agent to help chain bugs in Microsoft SharePoint into an unauthenticated takeover. The flaw carries a CVSS score of 9.1 and affects three server editions still widely used across government and enterprise.

3 min read
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