SEPTEMBER 23, 2026

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Case File

CVE-2023-21709

CRITICAL · CVSS 9.8 EPSS 1.86%

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

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Microsoft, Exchange.

CVE

CVE-2023-21709

Severity

CRITICAL

CVSS

9.8

EPSS

1.86%

Microsoft Exchange

Original NVD Description

Microsoft Exchange Server Elevation of Privilege Vulnerability

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-93381 HIGH CVE-2026-93375 HIGH CVE-2026-91734 HIGH CVE-2026-75624 HIGH CVE-2026-87654 CRITICAL CVE-2026-87653 MEDIUM