CVE-2019-1449

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A security feature bypass vulnerability exists in the way that Office Click-to-Run (C2R) components handle a specially crafted file, which could lead to a standard user, any AppContainer sandbox, and Office LPAC Protected View to escalate privileges to SYSTEM.To exploit this bug, an attacker would have to run a specially crafted file, aka 'Microsoft Office ClickToRun Security Feature Bypass Vulnerability'.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

Vendor	Product	Versions
Microsoft	Microsoft Office	2019 for 32-bit editions; 2019 for 64-bit editions
Microsoft	Office 365 ProPlus	32-bit Systems; 64-bit Systems

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1449Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1449Patch, Vendor Advisory

Timeline

Published: Nov 12, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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