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Vulnerability · Published Feb 14, 2023 · Assigned by microsoft

CVE-2023-21716Microsoft Word Remote Code Execution Vulnerability

Critical 9.8

In plain English

A critical-severity integer overflow in Microsoft 365 Apps for Enterprise from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 84.8% (higher than 99.7% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)84.8%top 0.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC

Official description

Microsoft Word Remote Code Execution Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – before https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2019 19.0.0 – before https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2019 for Mac 16.0.0 – before 16.70.23021201
Microsoft Microsoft Office LTSC 2021 16.0.1 – before https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 – before 16.70.23021201
Microsoft Microsoft Office Online Server 16.0.1 – before 16.0.10395.20001
Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.1 – before 15.0.5529.1000
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.0 – before 15.0.5529.1000
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 – before 16.0.5383.1000
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.0 – before 15.0.5529.1000
Microsoft Microsoft SharePoint Server 2019 16.0.0 – before 16.0.10395.20001
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 – before 16.0.15601.20478
Microsoft Microsoft Word 2013 Service Pack 1 15.0.1 – before 15.0.5529.1000
Microsoft Microsoft Word 2013 Service Pack 1 15.0.1 – before 15.0.5529.1000
Microsoft Microsoft Word 2016 16.0.1 – before 16.0.5383.1000
Microsoft SharePoint Server Subscription Edition Language Pack 16.0.0 – before 16.0.15601.20478

Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References