ACTIVELY EXPLOITED

CVE-2016-3235: Microsoft Office OLE DLL Side Loading Vulnerability

Facts
VendorMicrosoft
ProductOffice
Actively exploitedYes
Added to CISA KEV3 Nov 2021
CISA federal deadline3 May 2022
Weakness (CWE)CWE-264

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Microsoft Office Object Linking & Embedding (OLE) dynamic link library (DLL) contains a side loading vulnerability due to it improperly validating input before loading libraries. Successful exploitation allows for remote code execution.

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.