CVE-2023-23397

Vulnerability details

Microsoft Office Outlook contains a privilege escalation vulnerability that allows for a NTLM Relay attack against another service to authenticate as the user.

Added to CISA KEV: 2023-03-14

Ransomware campaign use: Unknown

CISA due date: 2023-04-04

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.