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.

NuGet Client Remote Code Execution Vulnerability

Active Directory Domain Services Elevation of Privilege Vulnerability

A Time-of-Check Time-of-Use bug existed in the Maintenance (Updater) Service that could be abused to grant Users write access to an arbitrary directory. This could have been used to escalate to SYSTEM access.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

Microsoft SharePoint Elevation of Privilege Vulnerability

Improper neutralization of special elements used in a command ('command injection') in Visual Studio allows an authorized attacker to execute code over a network.

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability

Visual Studio Code for Linux Remote Code Execution Vulnerability

An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. iCloud before 6.2 on Windows is affected. iTunes before 12.6 on Windows is affected. tvOS before 10.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in the ActionScript2 NetStream class. Successful exploitation could lead to arbitrary code execution.

Acrobat Reader versions 20.005.30636, 24.002.20965, 24.002.20964, 24.001.30123 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the XFA engine, related to sub-form functionality. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.221 and earlier have an exploitable use after free vulnerability in the ActionScript2 TextField object related to the variable property. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.221 and earlier have an exploitable use after free vulnerability related to an interaction between the privacy user interface and the ActionScript 2 Camera object. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable use after free vulnerability when masking display objects. Successful exploitation could lead to arbitrary code execution.

Acrobat Reader versions 24.002.21005, 24.001.30159, 20.005.30655, 24.003.20054 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Adobe Acrobat Reader 2017.009.20058 and earlier, 2017.008.30051 and earlier, 2015.006.30306 and earlier, and 11.0.20 and earlier has an exploitable use after free vulnerability in JavaScript engine when creating large strings. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.194 and earlier have an exploitable use after free vulnerability in the ActionScript 3 BitmapData class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.186 and earlier have an exploitable use after free vulnerability in the ActionScript MovieClip class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.186 and earlier have an exploitable use after free vulnerability in the ActionScript FileReference class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.194 and earlier have an exploitable use after free vulnerability in a routine related to player shutdown. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability in the XFA module, related to the choiceList element. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability in the JavaScript engine's annotation-related API. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the JavaScript engine, related to manipulation of the navigation pane. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.194 and earlier have an exploitable use after free vulnerability related to event handlers. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.171 and earlier have an exploitable use after free vulnerability when manipulating the ActionsScript 2 XML class. Successful exploitation could lead to arbitrary code execution.

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0624.

Adobe Flash Player versions 25.0.0.171 and earlier have an exploitable use after free vulnerability during internal computation caused by multiple display object mask manipulations. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in the internal script object. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the XFA engine, related to layout functionality. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable use after free vulnerability when handling multiple mask properties of display objects, aka memory corruption. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in the sound class. Successful exploitation could lead to arbitrary code execution.

An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory, aka 'Windows Common Log File System Driver Elevation of Privilege Vulnerability'.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the JavaScript engine. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability when manipulating an internal data structure. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the JavaScript engine, related to collaboration functionality. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 15.020.20042 and earlier, 15.006.30244 and earlier, 11.0.18 and earlier have an exploitable use after free vulnerability in the JavaScript engine. Successful exploitation could lead to arbitrary code execution.

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-0673, CVE-2020-0710, CVE-2020-0711, CVE-2020-0712, CVE-2020-0713, CVE-2020-0767.

Adobe Flash Player versions 24.0.0.221 and earlier have an exploitable use after free vulnerability related to garbage collection in the ActionScript 2 VM. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 24.0.0.194 and earlier have an exploitable use after free vulnerability in Primetime SDK event dispatch. Successful exploitation could lead to arbitrary code execution.

A vulnerability ( CVE-2024-38229 https://www.cve.org/CVERecord ) exists in EOL ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free, resulting in Remote Code Execution. Per CWE-416: Use After Free https://cwe.mitre.org/data/definitions/416.html , Use After Free is when a product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.8, 9.0.0-preview.1.24081.5 <= 9.0.0.RC.1 as represented in  CVE-2024-38229 https://www.cve.org/CVERecord . Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd  targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed. NOTE: This CVE only represents End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

Adobe Acrobat and Reader versions 2019.010.20100 and earlier, 2019.010.20099 and earlier, 2017.011.30140 and earlier, 2017.011.30138 and earlier, 2015.006.30495 and earlier, and 2015.006.30493 and earlier have a use after free vulnerability. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.127 and earlier have an exploitable use after free vulnerability in ActionScript2 when creating a getter/setter property. Successful exploitation could lead to arbitrary code execution.

Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability in XML Forms Architecture (XFA) related to reset form functionality. Successful exploitation could lead to arbitrary code execution.