Security Updates for Microsoft Sharepoint 2016 (June 2021)

high Nessus Plugin ID 150364


The Microsoft SharePoint Server 2016 installation on the remote host is affected by multiple vulnerabilities.


The Microsoft SharePoint Server 2016 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

- Microsoft SharePoint Server Remote Code Execution Vulnerability (CVE-2021-26420, CVE-2021-31963, CVE-2021-31964, CVE-2021-31966)

- Microsoft SharePoint Server Spoofing Vulnerability (CVE-2021-31948, CVE-2021-31950)

- Microsoft SharePoint Server Information Disclosure Vulnerability (CVE-2021-31965) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


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

See Also

Plugin Details

Severity: High

ID: 150364

File Name: smb_nt_ms21_june_office_sharepoint_2016.nasl

Version: 1.9

Type: local

Agent: windows

Published: 6/8/2021

Updated: 6/6/2024

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.4

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

CVSS Score Source: CVE-2021-31966


Risk Factor: High

Base Score: 7.6

Temporal Score: 7.1

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

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

CVSS Score Source: CVE-2021-31964

Vulnerability Information

CPE: cpe:/a:microsoft:sharepoint_server:2016

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-26420, CVE-2021-31948, CVE-2021-31950, CVE-2021-31963, CVE-2021-31964, CVE-2021-31965, CVE-2021-31966

IAVA: 2021-A-0277-S

MSFT: MS21-5001946

MSKB: 5001946