# CVE-2023-23397: Microsoft Outlook Elevation of Privilege Vulnerability

> CVE-2023-23397: Microsoft Outlook Elevation of Privilege Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2023-23397
Last updated: 2025-10-21T23:15:23Z

- Published: 2023-03-14 16:55 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: microsoft
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
- EPSS: 97.2%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-03-14, federal due date 2023-04-04, ransomware use: Unknown
- CWE: CWE-20

## Description

Microsoft Outlook Elevation of Privilege Vulnerability

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Microsoft 365 Apps for Enterprise
- Microsoft: Microsoft Office 2019
- Microsoft: Microsoft Office LTSC 2021
- Microsoft: Microsoft Outlook 2013 Service Pack 1
- Microsoft: Microsoft Outlook 2016

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-23397)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2023-23397)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2023-23397 · Markdown: https://rewindex.com/cve/CVE-2023-23397.md · JSON: https://rewindex.com/api/v1/cves/CVE-2023-23397 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:35.586Z