CRITICAL 9.8 Microsoft
CVE-2023-21709
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Security Update 2023-Aug: Microsoft Exchange Server Elevation of Privilege Vulnerability
Affected Products
- Microsoft Exchange Server 2019 Cumulative Update 12
- Microsoft Exchange Server 2016 Cumulative Update 23
- Microsoft Exchange Server 2019 Cumulative Update 13
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21709
- https://nvd.nist.gov/vuln/detail/CVE-2023-21709
This critical severity vulnerability with a CVSS score of 9.8 was published on 2023-08-08 via Microsoft. Affected: Microsoft Exchange Server 2019 Cumulative Update 12, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 13.
Risk Timeline
CVE Disclosed2023-08-08 · 1179 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21709NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2023-21709Related Vulnerabilities
| CVE | Title | Severity | CVSS |
|---|---|---|---|
| CVE-2026-96207 | Microsoft Partner Center Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-97785 | AAD App Proxy Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-32186 | Microsoft Bing Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
| CVE-2026-33819 | Microsoft Bing Remote Code Execution Vulnerability | CRITICAL | 10.0 |
| CVE-2026-35431 | Microsoft Entra ID Entitlement Management Spoofing Vulnerability | CRITICAL | 10.0 |
| CVE-2026-69843 | Microsoft Fabric Elevation of Privilege Vulnerability | CRITICAL | 10.0 |
vulnfeed aggregates 17475 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.