Security Updates for Microsoft Exchange Server (CVE-2021-1730) (February 2021)

medium Nessus Plugin ID 146330


The Microsoft Exchange Server installed on the remote host is affected by a spoofing vulnerability.


The Microsoft Exchange Server installed on the remote host is missing security updates. It is, therefore, affected by a spoofing vulnerability:

- A spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-1730)


Microsoft has released the following security updates to address this issue:

See Also

Plugin Details

Severity: Medium

ID: 146330

File Name: smb_nt_ms21_feb_exchange_cve-2021-1730.nasl

Version: 1.7

Type: local

Agent: windows

Published: 2/9/2021

Updated: 4/4/2022

Supported Sensors: Frictionless Assessment Agent

Risk Information


Risk Factor: Low

Score: 2.5


Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-1730


Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:exchange_server

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 2/9/2021

Vulnerability Publication Date: 2/9/2021

Reference Information

CVE: CVE-2021-1730

MSKB: 4571787, 4571788

MSFT: MS21-4571787, MS21-4571788

IAVA: 2021-A-0069-S