MS KB3108638: Update for Windows Hyper-V to Address CPU Weakness

medium Nessus Plugin ID 86818
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 multiple denial of service vulnerabilities.


The remote Windows host is affected by multiple denial of service vulnerabilities that can be triggered with certain central processing unit (CPU) chipsets. A local attacker with kernel-mode privileges on a Hyper-V guest can exploit this to cause all Hyper-V guests to become unresponsive.


Microsoft has released a set of patches for Windows 2008, 2008 R2, 8, 2012, 8.1, 2012 R2, and 10.

See Also

Plugin Details

Severity: Medium

ID: 86818

File Name: smb_kb3108638.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 11/10/2015

Updated: 11/15/2018

Dependencies: smb_hotfixes.nasl, wmi_enum_server_features.nbin, ms_bulletin_checks_possible.nasl

Risk Information


Risk Factor: Medium

Score: 4


Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

Temporal Vector: E:U/RL:OF/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: 11/10/2015

Vulnerability Publication Date: 11/10/2015

Reference Information

CVE: CVE-2015-5307, CVE-2015-8104

IAVB: 2015-B-0136

MSKB: 3108638, 3105213, 3108604