CRITICAL 9.8 Microsoft PoC
CVE-2023-21716
Microsoft Word Remote Code Execution Vulnerability
Microsoft Security Update 2023-Feb: Microsoft Word Remote Code Execution Vulnerability
Affected Products
- Microsoft Office LTSC for Mac 2021
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft SharePoint Server Subscription Edition
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- SharePoint Server Subscription Edition Language Pack
- Microsoft Office Online Server
- Microsoft Office 2019 for Mac
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716
- https://nvd.nist.gov/vuln/detail/CVE-2023-21716
This critical severity vulnerability with a CVSS score of 9.8 was published on 2023-02-14 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 82.3% (top 0% of all CVEs by exploitation probability). Affected: Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft SharePoint Server Subscription Edition and 5 more.
Risk Timeline
CVE Disclosed2023-02-14 · 1283 days ago
Public PoC Exploit AvailableWeaponised proof-of-concept code is publicly accessible
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21716NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2023-21716Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| CVE-2026-63508 | Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-65667 | Microsoft Teams Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-56191 | Microsoft Exchange Online Tampering Vulnerability | CRITICAL | 10.0 |
| CVE-2026-57106 | Data Quality Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-23652 | Microsoft Power Pages Remote Code Execution Vulnerability | CRITICAL | 10.0 |
| CVE-2026-41104 | Microsoft Planetary Computer Pro Information Disclosure Vulnerability | CRITICAL | 10.0 |
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