Microsoft Exchange Server Remote Code Execution Vulnerability
History

Wed, 19 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:exchange_server:2010:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*

Wed, 19 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:2019:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_10:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_11:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_12:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_13:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_14:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_15:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_16:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_17:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_18:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_19:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_1:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_21:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_22:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_23:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_2:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_3:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_4:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_5:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_6:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_7:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_8:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_9:*:*:*:*:*:*
References

Wed, 22 Oct 2025 00:15:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.78824}

epss

{'score': 0.85758}


Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.75395}

epss

{'score': 0.78824}


Tue, 04 Feb 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-03'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2021-03-02T23:55:27.000Z

Updated: 2026-08-19T16:30:16.317Z

Reserved: 2021-02-08T00:00:00.000Z

Link: CVE-2021-26858

cve-icon Vulnrichment

Updated: 2024-08-03T20:33:41.156Z

cve-icon NVD

Status : Analyzed

Published: 2021-03-03T00:15:12.227

Modified: 2026-08-19T19:23:36.800

Link: CVE-2021-26858

cve-icon Redhat

No data.