CVE-2023-33148: Microsoft Office Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2023-Jul

Released

2023-07-11

EPSS Score

1.72% (percentile: 82.4%)

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker who successfully exploited this vulnerability could execute RPC functions that are restricted to local clients only. According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of confidentiality (C:H), integrity (I:H), and availability (A:H). What does that mean for this vulnerability? An attacker who successfully exploits this vulnerability could perform a local attack potentially enabling access to the victim user's information, the ability to alter information, or the ability to cause downtime to the target environment.

Affected Products (8)

Microsoft Office

• Microsoft Office 2013 Click-to-Run (C2R) for 32-bit editions
• Microsoft Office 2013 Click-to-Run (C2R) for 64-bit editions
• Microsoft Office 2019 for 32-bit editions
• Microsoft Office 2019 for 64-bit editions
• Microsoft 365 Apps for Enterprise for 32-bit Systems
• Microsoft 365 Apps for Enterprise for 64-bit Systems
• Microsoft Office LTSC 2021 for 64-bit editions
• Microsoft Office LTSC 2021 for 32-bit editions

Acknowledgments

Ruslan Sayfiev and Denis Faiustov

Revision History

• 2023-07-11: Information published.