Microsoft Security Response Center

**Is the Attachment Preview Pane an attack vector for this vulnerability?** Yes. The attachment Preview Pane that is accessed when a user clicks to preview an attached file is an attack vector; however, the email Preview Pane itself is not.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** A domain user could use this vulnerability to elevate privileges to SYSTEM assigned integrity level.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to gather information specific to the environment of the targeted component.

**According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?** The word **Remote** in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of initialized or uninitialized memory in the process heap.

**What type of information could be disclosed by this vulnerability?** Exploiting this vulnerability could allow the disclosure of initialized or uninitialized memory in the process heap.

**What privileges could be gained by an attacker who successfully exploited the vulnerability?** An attacker who successfully exploited this vulnerability could gain domain administrator privileges.

**According to the CVSS score, the attack vector is adjacent (AV:A). What does this mean for this vulnerability?** This attack is limited to systems connected to the same network segment as the attacker. The attack cannot be performed across multiple networks (for example, a WAN) and would be limited to systems on the same network switch or virtual network.

The following workaround may be helpful in your situation. In all cases, Microsoft strongly recommends that you install the updates for this vulnerability as soon as they become available even if you plan to leave this workaround in place: **Disable router discovery on IPv6 interface.** You can disable router discovery on the IPv6 interface to prevent attackers from exploiting the vulnerability, with the following PowerShell command: * Set-NetIPInterface -InterfaceIndex \[interface\_index\] -RouterDiscovery Disabled You can disable router discovery on the IPv6 interface to prevent attackers from exploiting the vulnerability, with the following Network Shell (netsh) command: * netsh interface ipv6 set interface \[interface\_name\] routerdiscovery=disabled Please refer to the workaround section of this security bulletin for more information: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-006 **Note:** No reboot is needed after making the change...

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.