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Tag: deserialization of untrusted data

4 articles

Employees work outside a modern office building with laptops and mobile devices.

Microsoft Entra ID Flaw Exploited, Enables Remote Code Execution

Microsoft warns of a critical flaw in Entra ID that lets hackers execute code remotely by exploiting a deserialization vulnerability, giving them free rein to wreak havoc over the network. This maximum-severity flaw, tracked as CVE-2026-69836, has been patched, but highlights the importance of staying vigilant against remote code execution threats.

Analyst 207
Server room with rows of computer equipment and a single blank laptop screen in the foreground.

Hackers Exploit SharePoint Flaw to Steal Machine Keys

Hackers have already started exploiting a recently discovered SharePoint flaw, CVE-2026-50522, to steal machine keys, with live attempts captured by global honeypots just hours after proof-of-concept exploit code was released. This vulnerability allows remote attackers to execute code without authentication, making it a serious threat.

Analyst 207
Rows of computer servers and storage systems in a brightly-lit corporate data center.

SharePoint Flaw CVE-2026-50522 Sees Active Exploitation After PoC Release

Attackers are actively exploiting a critical SharePoint vulnerability, CVE-2026-50522, using a single request to gain persistent access by pulling SharePoint machine keys. This flaw, patched by Microsoft in July, has a CVSS score of 9.8 and allows attackers to inject and execute code remotely on the SharePoint Server.

Analyst 207
A lone computer workstation sits in a vast, empty IT room with rows of server racks in the background.

CISA Warns of Active SharePoint RCE Exploitation

CISA warns that a high-severity vulnerability in Microsoft SharePoint Server, known as CVE-2026-45659, is being actively exploited, allowing authorized attackers to execute code remotely. This critical flaw, patched by Microsoft in May, requires immediate attention to prevent network breaches.

Analyst 207