Integer overflow in Microsoft 365 Apps For Enterprise
CVE-2023-21716
Microsoft Word Remote Code Execution Vulnerability
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.848 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.823 · newest: 0.848 · change: +0.025
Affected products
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office 2019 For Mac — versions 16.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
- Microsoft Office Online Server — versions 16.0.1
- Microsoft Office Web Apps Server 2013 Service Pack 1 — versions 15.0.1
- Microsoft Sharepoint Enterprise Server 2013 Service Pack 1 — versions 15.0.0
- Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
- Microsoft Sharepoint Foundation 2013 Service Pack 1 — versions 15.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716 (vendor-advisory, Patch, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-21716?
- CVE-2023-21716 is a critical-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2023-02-14.
- How severe is CVE-2023-21716?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-21716 known to be exploited?
- 57 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.