Microsoft Office
CVE-2020-16928 — Microsoft Office Click-to-Run Elevation of Privilege Vulnerability
Executive Summary
An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges. To exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.0
EPSS Score
0.03158
probability of exploitation in the next 30 days
0.86312 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Office 2013 Click-to-Run (C2R) for 32-bit editions | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Office 2013 Click-to-Run (C2R) for 64-bit editions | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Office 2019 for 32-bit editions | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Office 2019 for 64-bit editions | Click to Run (Security Update) |
Important | Elevation of Privilege | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Click to Run |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Ben Faull of Microsoft Corporation
References
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