Home / Vulnerabilities / CVE-2023-23397
CRITICAL SEVERITY
CVE-2023-23397 Microsoft · Office

Microsoft Office Outlook Privilege Escalation Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.8 / 10
Minimal Risk Critical
Vector Specification
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
Exploitation Likelihood

EPSS Prediction

93.60 %
Predictive Probability
Percentile Rank
99.8 th

Documented as more likely to be exploited than 99.8% of known CVEs.

Detection Date

Mar 14, 2023

Remediation Due

Apr 04, 2023

CISA Catalog Active

Threat Analysis

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

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-23397,

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-23397,
NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-23397