CISA-confirmed known exploited vulnerability

CVE-2017-11826

Microsoft Office Remote Code Execution Vulnerability

Microsoft · Office

Vulnerability details

A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user.

Added to CISA KEV: 2022-03-03

Ransomware campaign use: Unknown

CISA due date: 2022-03-24

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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