CRITICAL 9.8 Microsoft PoC
CVE-2023-23397
Microsoft Outlook Elevation of Privilege Vulnerability
Microsoft Security Update 2023-Mar: Microsoft Outlook Elevation of Privilege Vulnerability
Affected Products
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Outlook 2016 (32-bit edition)
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 2019 for 64-bit editions
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft Office 2019 for 32-bit editions
- Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397
- https://nvd.nist.gov/vuln/detail/CVE-2023-23397
This critical severity vulnerability with a CVSS score of 9.8 was published on 2023-03-14 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 97.4% (top 0% of all CVEs by exploitation probability). Affected: Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Outlook 2016 (32-bit edition), Microsoft Office LTSC 2021 for 64-bit editions and 5 more.
Risk Timeline
CVE Disclosed2023-03-14 · 1282 days ago
Public PoC Exploit AvailableWeaponised proof-of-concept code is publicly accessible
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2023-23397Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| 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 |
| CVE-2026-42901 | Microsoft Entra ID Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-42898 | Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability | CRITICAL | 9.9 |
| CVE-2025-59246 | Azure Entra ID Elevation of Privilege Vulnerability | CRITICAL | 9.8 |
| CVE-2023-35618 | Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability | CRITICAL | 9.6 |
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