KB4020535: Security Update for the Scripting Engine Memory Corruption Vulnerability (May 2017)

high Nessus Plugin ID 104045
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Windows host is affected by a remote code execution vulnerability.


The remote Windows host is missing security update KB4020535. It is, therefore, affected by a flaw in the VBScript engine due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website or open a specially crafted document file, to execute arbitrary code.


Apply security update KB4020535.

See Also



Plugin Details

Severity: High

ID: 104045

File Name: smb_nt_ms17_may_4020535.nasl

Version: 1.7

Type: local

Agent: windows

Published: 10/20/2017

Updated: 11/12/2019

Dependencies: smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl

Risk Information

CVSS Score Source: CVE-2017-0158


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 5/9/2017

Vulnerability Publication Date: 4/11/2017

Reference Information

CVE: CVE-2017-0158

BID: 97455

MSKB: 4020535

MSFT: MS17-4020535