Privilege escalation in Microsoft Office ClickToRun

Published: 2019-11-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-1449
Exploitation vector Local
Public exploit N/A
Vulnerable software
Microsoft Office
Client/Desktop applications / Office applications

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU22687

Risk: Low


CVE-ID: CVE-2019-1449

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to way 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. A local user can run a specially crafted file and escalate privileges to SYSTEM level.


Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus - 2019

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?