Security Updates for Windows 10 / Windows Server 2016 / Windows Server 2019 (March 2019) (Spectre) (Meltdown) (Foreshadow)

medium Nessus Plugin ID 122975
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 6


The remote Windows host is missing a microcode update.


The remote Windows host is missing a security update. It is, therefore, missing microcode updates to address the following vulnerabilities:

- Spectre Variant 3a (CVE-2018-3640: Rogue System Register Read (RSRE)).

- Spectre Variant 4 (CVE-2018-3639: Speculative Store Bypass (SSB))

- L1TF (CVE-2018-3620, CVE-2018-3646: L1 Terminal Fault)

Note that Nessus did not actually test for these flaws nor checked the target processor architecture but instead, has relied on the version of mcupdate_GenuineIntel.dll to be latest for supported Windows release.


Microsoft has released security updates for Windows 10, Windows Server 2016 and Server 2019.

See Also

Plugin Details

Severity: Medium

ID: 122975

File Name: smb_nt_ms19_mar_oob_microcode.nasl

Version: 1.4

Type: local

Agent: windows

Published: 3/20/2019

Updated: 11/26/2020

Dependencies: 57033, 13855, 93962, 99172

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 6

CVSS Score Source: CVE-2018-3639

CVSS v2.0

Base Score: 4.9

Temporal Score: 3.8

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

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

CVSS v3.0

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/18/2019

Vulnerability Publication Date: 5/22/2018

Reference Information

CVE: CVE-2018-3640, CVE-2018-3639, CVE-2018-3620, CVE-2018-3646

BID: 104228, 104232, 105080

MSKB: 4465065, 4346084, 4346085, 4346086, 4346087, 4346088

MSFT: MS19-4465065, MS19-4346084, MS19-4346085, MS19-4346086, MS19-4346087, MS19-4346088