Vulnerability Spotlight: Code execution vulnerability in Microsoft Excel

Summary: Cisco Talos discovered a use-after-free vulnerability in the component of Microsoft Excel that handles Office HTML and XML file types, affecting Office Professional Plus 2016 x86 (version 1909, build 12026.20334) and Office 365 ProPlus x86 (version 1902, build 11328.20480). A specially crafted XLS file triggers the condition and results in remote code execution, and Microsoft disclosed the vulnerability in this month's Patch Tuesday.
Bottom line: Exploitation requires only that an attacker deliver a malformed XLS file to a victim, so the entry point is a document your users already open without a second thought.

Read the original at Cisco Talos ↗

Topics: Vulnerabilities & Patching
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