Security Updates for Exchange (November 2020)

high Nessus Plugin ID 142888


The Microsoft Exchange Server installed on the remote host is affected by multiple vulnerabilities.


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

- Unspecified flaws exist that allow an attacker to execute arbitrary code. (CVE-2020-17083, CVE-2020-17084)
- An unspecified flaw exists that allows an attacker to cause denial of service conditions. (CVE-2020-17085) Please review the vendor advisory for more details.


Microsoft has released KB4588741 to address this issue.

See Also

Plugin Details

Severity: High

ID: 142888

File Name: smb_nt_ms20_nov_exchange.nasl

Version: 1.8

Type: local

Agent: windows

Published: 11/13/2020

Updated: 6/6/2024

Supported Sensors: Frictionless Assessment Agent, Nessus

Risk Information


Risk Factor: High

Score: 8.1


Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2020-17084


Risk Factor: High

Base Score: 8.5

Temporal Score: 7.4

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:exchange_server:2016, cpe:/a:microsoft:exchange_server:2019

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 11/10/2020

Vulnerability Publication Date: 11/10/2020

Reference Information

CVE: CVE-2020-17083, CVE-2020-17084, CVE-2020-17085

IAVA: 2020-A-0515-S

MSFT: MS20-4588741

MSKB: 4588741