Microsoft Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow a locally-authenticated attacker to run a specially crafted application on a targeted system when Windows Secure Kernel Mode fails to properly handle objects in memory, aka "Windows Elevation of Privilege Vulnerability".

Windows PDF in Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows information disclosure when a user opens a specially crafted PDF file, aka "Windows PDF Information Disclosure Vulnerability".

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

Microsoft SharePoint Elevation of Privilege Vulnerability

Microsoft Excel Security Feature Bypass Vulnerability

WithSecure Elements Endpoint Protection Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of WithSecure Elements Endpoint Protection. User interaction on the part of an administrator is required to exploit this vulnerability. The specific flaw exists within the WithSecure plugin hosting service. By creating a symbolic link, an attacker can abuse the service to create a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-23035.

Cross-site scripting (XSS) vulnerability in Internet Explorer 5.01 and 6 in Microsoft Windows 2000 SP4 permits access to local "HTML-embedded resource files" in the Microsoft Management Console (MMC) library, which allows remote authenticated users to execute arbitrary commands, aka "MMC Redirect Cross-Site Scripting Vulnerability."

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Uncontrolled Search Path Element vulnerability. A local attacker with non-administrative privileges can plant a malicious DLL to achieve arbitrary code execution in the context of the current user via DLL hijacking. Exploitation of this issue requires user interaction.

Windows DNS Server Remote Code Execution Vulnerability

Adobe Creative Cloud Desktop 3.5 (and earlier) is affected by an uncontrolled search path vulnerability that could result in elevation of privileges. Exploitation of this issue requires user interaction in that a victim must log on to the attacker's local machine.

The kernel-mode drivers in Microsoft Windows Server 2012 and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

Microsoft Exchange 2003 and Outlook Web Access (OWA), when configured to use NTLM authentication, does not properly reuse HTTP connections, which can cause OWA users to view mailboxes of other users when Kerberos has been disabled as an authentication method for IIS 6.0, e.g. when SharePoint Services 2.0 is installed.

We have investigated reports of a spoofing vulnerability in AppX installer that affects Microsoft Windows. Microsoft is aware of attacks that attempt to exploit this vulnerability by using specially crafted packages that include the malware family known as Emotet/Trickbot/Bazaloader. An attacker could craft a malicious attachment to be used in phishing campaigns. The attacker would then have to convince the user to open the specially crafted attachment. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Please see the Security Updates table for the link to the updated app. Alternatively you can download and install the Installer using the links provided in the FAQ section. Please see the Mitigations and Workaround sections for important information about steps you can take to protect your system from this vulnerability. December 27 2023 Update: In recent months, Microsoft Threat Intelligence has seen an increase in activity from threat actors leveraging social engineering and phishing techniques to target Windows OS users and utilizing the ms-appinstaller URI scheme. To address this increase in activity, we have updated the App Installer to disable the ms-appinstaller protocol by default and recommend other potential mitigations.

IBM DB2 for Linux, UNIX and Windows 9.2, 10.1, 10.5, and 11.1 (includes DB2 Connect Server) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code. IBM X-Force ID: 125159.

Microsoft Internet Information Services (IIS), when used in conjunction with unspecified third-party upload applications, allows remote attackers to create empty files with arbitrary extensions via a filename containing an initial extension followed by a : (colon) and a safe extension, as demonstrated by an upload of a .asp:.jpg file that results in creation of an empty .asp file, related to support for the NTFS Alternate Data Streams (ADS) filename syntax. NOTE: it could be argued that this is a vulnerability in the third-party product, not IIS, because the third-party product should be applying its extension restrictions to the portion of the filename before the colon.

Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability

Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file.

Adobe Flash Player version 27.0.0.159 and earlier has a flawed bytecode verification procedure, which allows for an untrusted value to be used in the calculation of an array index. This can lead to type confusion, and successful exploitation could lead to arbitrary code execution.

Local privilege escalation due to DLL hijacking vulnerability. The following products are affected: Acronis Cyber Protect Home Office (Windows) before build 40901, Acronis Cyber Protect Cloud Agent (Windows) before build 39378, Acronis Cyber Protect 16 (Windows) before build 39938.

An elevation of privilege vulnerability exists in Git for Visual Studio when it improperly parses configuration files. An attacker who successfully exploited the vulnerability could execute code in the context of another local user. To exploit the vulnerability, an authenticated attacker would need to modify Git configuration files on a system prior to a full installation of the application. The attacker would then need to convince another user on the system to execute specific Git commands. The update addresses the issue by changing the permissions required to edit configuration files.

A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.

A DCOM object in Helppane.exe in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016, when configured to run as the interactive user, allows an authenticated attacker to run arbitrary code in another user's session, aka "Windows COM Session Elevation of Privilege Vulnerability."

Microsoft SharePoint Server Spoofing Vulnerability

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold, 1511, and 1607 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability." a different vulnerability than CVE-2016-3266, CVE-2016-3376, and CVE-2016-7185.

Local privilege escalation during installation due to improper soft link handling. The following products are affected: Acronis Cyber Protect Home Office (Windows) before build 40278.

Local privilege escalation due to insecure folder permissions. The following products are affected: Acronis Agent (Windows) before build 30430, Acronis Cyber Protect 15 (Windows) before build 30984.

Unquoted Windows search path vulnerability in Adobe Creative Cloud Desktop Application before 3.7.0.272 on Windows allows local users to gain privileges via a Trojan horse executable file in the %SYSTEMDRIVE% directory.

Microsoft Excel 2007 SP3, Excel 2010 SP2, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3249, CVE-2016-3252, and CVE-2016-3254.

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3249, CVE-2016-3254, and CVE-2016-3286.

The kernel-mode drivers in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-3252, CVE-2016-3254, and CVE-2016-3286.

A vulnerability in the folder permissions of Cisco Webex Meetings client for Windows could allow an authenticated, local attacker to modify locally stored files and execute code on a targeted device with the privilege level of the user. The vulnerability is due to folder permissions that grant a user the permission to read, write, and execute files in the Webex folders. An attacker could exploit this vulnerability to write malicious files to the Webex client directory, affecting all other users of the targeted device. A successful exploit could allow a user to execute commands with elevated privileges. Attacks on single-user systems are less likely to occur, as the attack must be carried out by the user on the user's own system. Multiuser systems have a higher risk of exploitation because folder permissions have an impact on all users of the device. For an attacker to exploit this vulnerability successfully, a second user must execute the locally installed malicious file to allow remote code execution to occur.

Windows DNS Server Remote Code Execution Vulnerability

Microsoft Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 R2, and Windows 10 Gold and 1511 mishandle DLL loading, which allows local users to gain privileges via a crafted application, aka "DLL Loading Remote Code Execution Vulnerability."

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Office 2016, Word 2016, Word for Mac 2011, Word 2016 for Mac, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2, Word Automation Services on SharePoint Server 2013 SP1, Office Web Apps 2010 SP2, Office Web Apps Server 2013 SP1, and Office Online Server allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."

Windows Group Policy Elevation of Privilege Vulnerability

Microsoft SharePoint Server Remote Code Execution Vulnerability

Windows Hyper-V Remote Code Execution Vulnerability

The sandbox implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 Gold and 1511 mishandles reparse points, which allows local users to gain privileges via a crafted application, aka "Windows Mount Point Elevation of Privilege Vulnerability," a different vulnerability than CVE-2016-0007.

Windows Defender Remote Credential Guard Elevation of Privilege Vulnerability

Microsoft SQL Server Remote Code Execution Vulnerability

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

A remote code execution vulnerability exists in Microsoft Dynamics 365 for Finance and Operations (on-premises) version 10.0.11. An attacker who successfully exploited this vulnerability could gain remote code execution via server-side script execution on the victim server. An authenticated attacker with privileges to import and export data could exploit this vulnerability by sending a specially crafted file to a vulnerable Dynamics server. The security update addresses the vulnerability by correcting how Microsoft Dynamics 365 for Finance and Operations (on-premises) version 10.0.11 handles user input.

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.1.0.5096. A use-after-free condition can occur when accessing the CreationDate property of the this.info object. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If the browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.

An remote code execution vulnerability exists in Microsoft Dynamics Business Central, aka 'Dynamics Business Central Remote Code Execution Vulnerability'.

Improper file verification in install routine for Intel(R) SGX SDK and Platform Software for Windows before 2.2.100 may allow an escalation of privilege via local access.

Windows Kerberos Elevation of Privilege Vulnerability

Windows Direct Show Remote Code Execution Vulnerability

Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability

Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an attacker to bypass Extended Protection for Authentication when Kerberos fails to prevent tampering with the SNAME field during ticket exchange, aka "Kerberos SNAME Security Feature Bypass Vulnerability" or Orpheus' Lyre.