Medium severity · published Nov 10, 2021
CVE-2021-41379
Windows Installer Elevation of Privilege Vulnerability
RansomwareIn wildKEV
5.5
CVSS
19.5%
EPSS
Yes
On KEV
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)19.5% · higher than 97% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 3, 2022
Federal remediation dueMar 17, 2022
Ransomware campaign useKnown
Affected products
Which versions
WI
Windows · Microsoft
All versions, or not specified · source: KEV
W1
Windows 10 Version 1507 · Microsoft
10.0.10240.0 before 10.0.10240.19119 · source: vendor
W1
Windows 10 Version 1607 · Microsoft
10.0.14393.0 before 10.0.14393.4770 · source: vendor
W1
Windows 10 Version 1809 · Microsoft
10.0.17763.0 before 10.0.17763.2300; 10.0.0 before 10.0.17763.2300 · source: vendor
W1
Windows 10 Version 1909 · Microsoft
10.0.0 before 10.0.18363.1916 · source: vendor
W1
Windows 10 Version 2004 · Microsoft
10.0.0 before 10.0.19041.1348 · source: vendor
W1
Windows 10 Version 20H2 · Microsoft
10.0.0 before 10.0.19042.1348 · source: vendor
W1
Windows 10 Version 21H1 · Microsoft
10.0.0 before 10.0.19043.1348 · source: vendor
W1
Windows 11 version 21H2 · Microsoft
10.0.22000.0 before 10.0.22000.318 · source: vendor
W7
Windows 7 · Microsoft
6.1.0 before 6.1.7601.25769 · source: vendor, NVD
W7
Windows 7 Service Pack 1 · Microsoft
6.1.0 before 6.1.7601.25769 · source: vendor
W8
Windows 8.1 · Microsoft
6.3.0 before 6.3.9600.20174 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41379
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41379
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41379
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