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CVE-2020-16957

Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

HIGH
7.8
CVSS Score
Published: October 16, 2020 at 10:18 PM UTC
Updated: June 17, 2026 at 02:58 AM UTC
3 products affected across 1 vendorOffice365 AppsOffice 2019

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Severity
HIGH7.8
Exploit prediction
EPSS 4%

Description

<p>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.</p> <p>An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file.</p> <p>The update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.</p>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Office· Microsoft
95%
2019
365 Apps· Microsoft
60%
16.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
Office 2019· Microsoft
60%
19.0.0 ≤ v < https://aka.ms/OfficeSecurityReleases19.0.0
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16957

CVSS

7.8HIGHmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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