CVE-2021-26858
Published: Mar 2, 2021
Modified: Oct 21, 2025
CVSS v3.1
7.8
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
| Vendor | Product | Versions |
|---|---|---|
Microsoft | Microsoft Exchange Server 2019 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2013 Cumulative Update 22 | affected 15.00.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 2 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 13 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | affected 15.00.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 3 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 14 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 4 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 15 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 5 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 6 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 16 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 17 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 7 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 18 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 19 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 8 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2013 Cumulative Update 21 | affected 15.00.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 12 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 8 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2019 Cumulative Update 1 | affected 15.02.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 9 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 10 | affected 15.01.0 - < publication |
Microsoft | Microsoft Exchange Server 2016 Cumulative Update 11 | affected 15.01.0 - < publication |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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