Visual Studio Code Spoofing Vulnerability
Max CVSS
4.3
Published
2021-12-15
Updated
2022-01-01
EPSS
0.11%
Visual Studio Code WSL Extension Remote Code Execution Vulnerability
Max CVSS
10.0
Published
2021-12-15
Updated
2022-01-01
EPSS
2.32%
Microsoft Office app Remote Code Execution Vulnerability
Max CVSS
9.6
Published
2021-12-15
Updated
2022-01-01
EPSS
1.71%
Microsoft 4K Wireless Display Adapter Remote Code Execution Vulnerability
Max CVSS
9.8
Published
2021-12-15
Updated
2022-07-12
EPSS
1.74%
Microsoft PowerShell Spoofing Vulnerability
Max CVSS
5.5
Published
2021-12-15
Updated
2022-10-18
EPSS
0.18%
Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability
Max CVSS
7.5
Published
2021-12-15
Updated
2022-07-12
EPSS
0.17%
Microsoft BizTalk ESB Toolkit Spoofing Vulnerability
Max CVSS
7.4
Published
2021-12-15
Updated
2022-01-01
EPSS
0.24%
Visual Studio Code Remote Code Execution Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.33%

CVE-2021-43890

Known Exploited Vulnerability
<p>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.</p> <p>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.</p> <p>Please see the <strong>Security Updates</strong> table for the link to the updated app. Alternatively you can download and install the Installer using the links provided in the <strong>FAQ</strong> section.</p> <p>Please see the <strong>Mitigations</strong> and <strong>Workaround</strong> sections for important information about steps you can take to protect your system from this vulnerability.</p> <p><strong>December 27 2023 Update:</strong></p> <p>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 <a href="https://learn.microsoft.com/en-us/windows/msix/app-installer/installing-windows10-apps-web">ms-appinstaller URI scheme</a>.</p> <p>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.</p>
Max CVSS
7.1
Published
2021-12-15
Updated
2023-12-30
EPSS
0.17%
KEV Added
2021-12-15
Microsoft Defender for IoT Remote Code Execution Vulnerability
Max CVSS
7.2
Published
2021-12-15
Updated
2023-12-28
EPSS
1.08%
Microsoft Defender for IoT Information Disclosure Vulnerability
Max CVSS
7.5
Published
2021-12-15
Updated
2022-01-01
EPSS
5.82%
Windows Installer Elevation of Privilege Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.04%
Microsoft Defender for IoT Remote Code Execution Vulnerability
Max CVSS
9.8
Published
2021-12-15
Updated
2023-12-28
EPSS
3.56%
Windows Mobile Device Management Elevation of Privilege Vulnerability
Max CVSS
5.5
Published
2021-12-15
Updated
2022-07-12
EPSS
0.04%
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Max CVSS
8.8
Published
2021-12-15
Updated
2023-12-28
EPSS
0.04%
Microsoft SharePoint Elevation of Privilege Vulnerability
Max CVSS
8.8
Published
2021-12-29
Updated
2023-12-28
EPSS
0.12%
Microsoft Office Graphics Remote Code Execution Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.48%
Microsoft Excel Remote Code Execution Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-01-01
EPSS
0.55%
Microsoft Office Trust Center Spoofing Vulnerability
Max CVSS
5.5
Published
2021-12-15
Updated
2022-01-01
EPSS
0.18%
Windows Digital Media Receiver Elevation of Privilege Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.04%
Windows TCP/IP Driver Elevation of Privilege Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.06%
Windows Hyper-V Denial of Service Vulnerability
Max CVSS
5.6
Published
2021-12-15
Updated
2022-07-12
EPSS
0.04%
Windows Digital TV Tuner Elevation of Privilege Vulnerability
Max CVSS
7.8
Published
2021-12-15
Updated
2022-07-12
EPSS
0.04%
Windows Kernel Information Disclosure Vulnerability
Max CVSS
6.5
Published
2021-12-15
Updated
2022-05-23
EPSS
0.04%
VP9 Video Extensions Information Disclosure Vulnerability
Max CVSS
5.5
Published
2021-12-15
Updated
2022-01-01
EPSS
0.04%
923 vulnerabilities found
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