CVE-2021-43883
Windows Installer Elevation of Privilege Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Windows Installer Elevation of Privilege Vulnerability
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 12.1% · top 3.8% of all CVEs (4 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- Elevation of Privilege
Affected products
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < 10.0.17763.2366
Microsoft · Windows Server 2019
- affected 10.0.0 – < 10.0.17763.2366
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.0 – < 10.0.17763.2366
Microsoft · Windows 10 Version 1909
- affected 10.0.0 – < 10.0.18363.1977
Microsoft · Windows 10 Version 21H1
- affected 10.0.0 – < 10.0.19043.1415
Microsoft · Windows Server 2022
- affected 10.0.0 – < 10.0.20348.405
Microsoft · Windows 10 Version 2004
- affected 10.0.0 – < 10.0.19041.1415
Microsoft · Windows Server version 2004
- affected 10.0.0 – < 10.0.19041.1415
Microsoft · Windows 10 Version 20H2
- affected 10.0.0 – < 10.0.19042.1415
Microsoft · Windows Server version 20H2
- affected 10.0.0 – < 10.0.19042.1415
Microsoft · Windows 11 version 21H2
- affected 10.0.0 – < 10.0.22000.376
Microsoft · Windows 10 Version 21H2
- affected 10.0.0 – < 10.0.19044.1415
Microsoft · Windows 10 Version 1507
- affected 10.0.0 – < 10.0.10240.19145
Microsoft · Windows 10 Version 1607
- affected 10.0.0 – < 10.0.14393.4825
Microsoft · Windows Server 2016
- affected 10.0.0 – < 10.0.14393.4825
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.0 – < 10.0.14393.4825
- affected 6.1.0 – < 6.1.7601.25796
Microsoft · Windows 7 Service Pack 1
- affected 6.1.0 – < 6.1.7601.25796
- affected 6.3.0 – < 6.3.9600.20207
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.0 – < 6.0.6003.21309
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.0 – < 6.0.6003.21309
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.0 – < 6.0.6003.21309
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.0 – < 6.1.7601.25796
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.0.0 – < 6.1.7601.25796
Microsoft · Windows Server 2012
- affected 6.2.0 – < 6.2.9200.23545
- affected 6.2.0 – < 6.2.9200.23540
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.0 – < 6.2.9200.23545
- affected 6.2.0 – < 6.2.9200.23540
Microsoft · Windows Server 2012 R2
- affected 6.3.0 – < 6.3.9600.20207
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.0 – < 6.3.9600.20207
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43883 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-43883)Record last updated .