AUGUST 4, 2026
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Case File

CVE-2023-23397

CRITICAL · CVSS 9.8 EPSS 97.41% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-03-14 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Microsoft. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild. Its EPSS score suggests a 97.4% probability of exploitation in the next 30 days.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2023-03-14

Required action: Apply updates per vendor instructions.

CVE
CVE-2023-23397
Severity
CRITICAL
CVSS
9.8
EPSS
97.41%
Microsoft

Original NVD Description

Microsoft Outlook Elevation of Privilege Vulnerability

Related CVEs

Other vulnerabilities affecting the same vendor(s)