Microsoft Office
CVE-2021-1716 — Microsoft Word Remote Code Execution Vulnerability
Executive Summary
None
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8
EPSS Score
0.03614
probability of exploitation in the next 30 days
0.88289 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
10 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office 2010 Service Pack 2 (32-bit editions) 4493142 (Security Update) 4493142 (Security Update) Important Remote Code Execution 4486738 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Maybe None Microsoft Office 2010 Service Pack 2 (64-bit editions) 4493142 (Security Update) 4493142 (Security Update) Important Remote Code Execution 4486738 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Maybe None Microsoft Office 2019 for 32-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office 2019 for 64-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office 2019 for Mac | Release Notes (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office Online Server | 4493160 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office Web Apps 2010 Service Pack 2 | 4493183 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office Web Apps Server 2013 Service Pack 1 | 4493171 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SharePoint Enterprise Server 2013 Service Pack 1 | 4486683 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SharePoint Enterprise Server 2016 4493163 (Security Update) 4493167 (Security Update) Important Remote Code Execution 4486753 4486721 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Maybe None Microsoft SharePoint Server 2010 Service Pack 2 | 4493178 (Security Update) |
Important | Remote Code Execution | Maybe |
Patches
7 patches
| Article | Type | Restart |
|---|---|---|
Click to Run |
Security Update | No |
Release Notes |
Security Update | No |
4493160 |
Security Update | Maybe |
4493183 |
Security Update | Maybe |
4493171 |
Security Update | Maybe |
4486683 |
Security Update | Maybe |
4493178 |
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
Zhangjie and willJ
References
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