Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2023-23397
Microsoft Outlook Elevation of Privilege Vulnerability
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U H H H 9.8 .9716 99.9 YES
AFFECTED
Product Versions Fixed
Microsoft Office LTSC 2021 16.0.1 – —
Microsoft Outlook 2016 16.0.0.0 – —
Microsoft 365 Apps for Enterprise 16.0.1 – —
Microsoft Office 2019 19.0.0 – —
Microsoft Outlook 2013 Service Pack 1 15.0.0.0 – —
TIMELINE
Jan 11 Reserved by microsoft
Mar 14 Added to CISA KEV, remediation due 2023-04-04
Mar 14 Published (CNA: microsoft)
Description
Microsoft Outlook Elevation of Privilege Vulnerability
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| January 11, 2023 | Reserved | Reserved by microsoft |
| March 14, 2023 | KEV ADDED | Added to CISA KEV, remediation due 2023-04-04 |
| March 14, 2023 | Published | Published (CNA: microsoft) |
Affected
Affected products and packages — 5 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Microsoft | Microsoft Office LTSC 2021 | — | 16.0.1 | — |
| Microsoft | Microsoft Outlook 2016 | — | 16.0.0.0 | — |
| Microsoft | Microsoft 365 Apps for Enterprise | — | 16.0.1 | — |
| Microsoft | Microsoft Office 2019 | — | 19.0.0 | — |
| Microsoft | Microsoft Outlook 2013 Service Pack 1 | — | 15.0.0.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-23397 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
