Microsoft Exchange Server Elevation of Privilege Vulnerability
Priority LOW 37Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
Microsoft Exchange Server Elevation of Privilege Vulnerability
Why it matters now
EPSS 0.00871 59th percentileScored 2026-11-07
Fix Fixed Microsoft: 2 updates
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 22 | 15.0.0 to before 15.01.2375.028 | 15.01.2375.028 | Patch available | CNA |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 11 | 15.02.0 to before 15.02.0986.026 | 15.02.0986.026 | Patch available | CNA |
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 to before 15.00.1497.36 | 15.00.1497.36 | Patch available | CNA |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 to before 15.01.2507.009 | 15.01.2507.009 | Patch available | CNA |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 12 | 15.02.0 to before 15.02.1118.009 | 15.02.1118.009 | Patch available | CNA |
- Microsoft Exchange Server 2016 Cumulative Update 22 VendorMicrosoft Affected 15.0.0 to before 15.01.2375.028 Fixed in 15.01.2375.028 Patch available CNA
- Microsoft Exchange Server 2019 Cumulative Update 11 VendorMicrosoft Affected 15.02.0 to before 15.02.0986.026 Fixed in 15.02.0986.026 Patch available CNA
- Microsoft Exchange Server 2013 Cumulative Update 23 VendorMicrosoft Affected 15.00.0 to before 15.00.1497.36 Fixed in 15.00.1497.36 Patch available CNA
- Microsoft Exchange Server 2016 Cumulative Update 23 VendorMicrosoft Affected 15.01.0 to before 15.01.2507.009 Fixed in 15.01.2507.009 Patch available CNA
- Microsoft Exchange Server 2019 Cumulative Update 12 VendorMicrosoft Affected 15.02.0 to before 15.02.1118.009 Fixed in 15.02.1118.009 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* | 2013 cumulative_update_23 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:* | 2016 cumulative_update_22 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:* | 2016 cumulative_update_23 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:* | 2019 cumulative_update_11 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_12:*:*:*:*:*:* | 2019 cumulative_update_12 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* Versions 2013 cumulative_update_23 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:* Versions 2016 cumulative_update_22 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:* Versions 2016 cumulative_update_23 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:* Versions 2019 cumulative_update_11 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_12:*:*:*:*:*:* Versions 2019 cumulative_update_12 Vulnerable ·Microsoft
Remediation
Microsoft 2 updates
- Security Update
- Microsoft Exchange Server 2016 Cumulative Update 22 15.01.2375.028
- Microsoft Exchange Server 2016 Cumulative Update 23 15.01.2507.009
- Microsoft Exchange Server 2019 Cumulative Update 11 15.02.0986.026
- Microsoft Exchange Server 2019 Cumulative Update 12 15.02.1118.009
- Security Update
- Microsoft Exchange Server 2013 Cumulative Update 23 15.00.1497.36
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Elevation of Privilege
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
Timeline
- 2026-10-02 Threatist record created from CVE-2022-21978
- 2026-10-03 Alias added: GHSA-72rg-xpq2-2j8c
References
More Microsoft Exchange Server vulnerabilities
- TI-2024-14170 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2022-19610 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13547 Microsoft Exchange Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-13502 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2021-08465 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-07929 Microsoft Exchange Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2022-21978 · CVE Program
- CVE-2022-21978 · NVD
- FIRST EPSS
- GHSA-72rg-xpq2-2j8c · GitHub Advisory Database · CC BY 4.0
- CVE-2022-21978 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences