Microsoft Office
CVE-2020-0961 — Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
Executive Summary
A remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.
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
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
EPSS Score
0.11548
probability of exploitation in the next 30 days
0.9564 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
11 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Office 2010 Service Pack 2 (32-bit editions) | 4484238 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2010 Service Pack 2 (64-bit editions) | 4484238 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2013 RT Service Pack 1 | 4484229 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2013 Service Pack 1 (32-bit editions) | 4484229 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2013 Service Pack 1 (64-bit editions) | 4484229 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2016 (32-bit edition) | 4484287 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2016 (64-bit edition) | 4484287 (Security Update) |
Important | Remote Code Execution | Maybe |
| 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 |
| Office 365 ProPlus for 32-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Office 365 ProPlus for 64-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
4484238 |
Security Update | Maybe |
4484229 |
Security Update | Maybe |
4484287 |
Security Update | Maybe |
Click to Run |
Security Update | No |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
Shi Ji (Codebreaker) of STAR Labs
References
On This Page