CVE-2023-23397
Microsoft Office LTSC 2021, Microsoft Outlook 2016, Microsoft 365 Apps for Enterprise
Published 14 Mar 2023 · updated 17 Jun 2026 · Analyzed
9.8 Critical · CVSS 3.1, NVD
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 14 Mar 2023, with a remediation deadline of 4 Apr 2023 for US federal agencies.
Required action: Apply updates per vendor instructions.
Description
Microsoft Outlook Elevation of Privilege Vulnerability
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397 · Patch, Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-23397 · US Government Resource