Microsoft: >> Windows 11 21h2 Security Vulnerabilities
Microsoft Diagnostics Hub Standard Collector Runtime Elevation of Privilege Vulnerability
CVSS Score
7.0
EPSS Score
0.003
Published
2022-01-11
CVE-2021-43890
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.
Known exploited
CVSS Score
7.1
EPSS Score
0.164
Published
2021-12-15
CVE-2021-43226
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Known exploited
CVSS Score
7.8
EPSS Score
0.084
Published
2021-12-15
CVE-2021-41379
Windows Installer Elevation of Privilege Vulnerability
Known exploited
CVSS Score
5.5
EPSS Score
0.012
Published
2021-11-10
CVE-2021-41357
Win32k Elevation of Privilege Vulnerability
Known exploited
CVSS Score
7.8
EPSS Score
0.055
Published
2021-10-13
Windows Media Foundation Dolby Digital Atmos Decoders Remote Code Execution Vulnerability
CVSS Score
7.8
EPSS Score
0.041
Published
2021-10-13
Windows Network Address Translation (NAT) Denial of Service Vulnerability
CVSS Score
7.7
EPSS Score
0.091
Published
2021-10-13
Windows Text Shaping Remote Code Execution Vulnerability
CVSS Score
7.8
EPSS Score
0.037
Published
2021-10-13
CVE-2021-40449
Win32k Elevation of Privilege Vulnerability
Known exploited
CVSS Score
7.8
EPSS Score
0.917
Published
2021-10-13
CVE-2021-40450
Win32k Elevation of Privilege Vulnerability
Known exploited
CVSS Score
7.8
EPSS Score
0.056
Published
2021-10-13