CVE-2023-21716 in the critical feed json
Microsoft Word Remote Code Execution Vulnerability
published 2023-02-14 3 y ago modified 2026-08-19 2 mo ago also EUVD-2023-25883
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 84.8%
- EPSS 84.8% chance of exploitation in 30 days, percentile 99.7%
- public exploits
- 0
- none known
Summary
Microsoft Word Remote Code Execution Vulnerability
Patch / fix
- Microsoft Microsoft Office 2019 for Mac 16.70.23021201
- Microsoft Microsoft Office LTSC for Mac 2021 16.70.23021201
- Microsoft Microsoft Office Online Server 16.0.10395.20001
- Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.5529.1000
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5529.1000
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5383.1000
- Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.5529.1000
- Microsoft Microsoft SharePoint Server 2019 16.0.10395.20001
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.15601.20478
- Microsoft Microsoft Word 2013 Service Pack 1 15.0.5529.1000
- Microsoft Microsoft Word 2016 16.0.5383.1000
- Microsoft SharePoint Server Subscription Edition Language Pack 16.0.15601.20478
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
84.80% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft 365 Apps for Enterprise
- Microsoft Microsoft Office 2019
- Microsoft Microsoft Office 2019 for Mac
- Microsoft Microsoft Office LTSC 2021
- Microsoft Microsoft Office LTSC for Mac 2021
- Microsoft Microsoft Office Online Server
- Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Server Subscription Edition
- Microsoft Microsoft Word 2013 Service Pack 1
- Microsoft Microsoft Word 2016
- Microsoft SharePoint Server Subscription Edition Language Pack
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-21716
vendor-advisory, patch
Sources
- CVE List CVE-2023-21716
- NVD CVE-2023-21716
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.