CVE-2021-26855

HIGH

Description

Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.

References

http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html

http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855

Details

Source: MITRE

Published: 2021-03-03

Updated: 2021-03-26

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:-:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*

cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
147171Microsoft Exchange Server Authentication BypassNessusWindows
high
147003Security Updates for Microsoft Exchange Server (March 2021)NessusWindows : Microsoft Bulletins
high