CVE-2023-23397
Microsoft Office Outlook Privilege Escalation Vulnerability
CVSS
—
No CVSS
EPSS
97.4%
p100
KEV
YES
Mar 14, 2023
Exploit Today
80
0-100
Published: — · Last modified: —
Product
Microsoft / Office
Vulnerability
Microsoft Office Outlook Privilege Escalation Vulnerability
Added to KEV
Mar 14, 2023
Remediate by
Apr 4, 2023
Known ransomware use
No
Summary description
Microsoft Office Outlook contains a privilege escalation vulnerability that allows for a NTLM Relay attack against another service to authenticate as the user.
Required action
Apply updates per vendor instructions.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-23397, https://msrc.microsoft.com/blog/2023/03/microsoft-mitigates-outlook-elevation-of-privilege-vulnerability/, ; https://nvd.nist.gov/vuln/detail/CVE-2023-23397