CVE-2021-43237 json
Windows Setup Elevation of Privilege Vulnerability
published 2021-12-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30181
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
Windows Setup Elevation of Privilege Vulnerability
Patch / fix
- Microsoft Windows 10 Version 1909 10.0.18363.1977
- Microsoft Windows 10 Version 21H1 10.0.19043.1415
- Microsoft Windows Server 2022 10.0.20348.405
- Microsoft Windows 10 Version 2004 10.0.19041.1415
- Microsoft Windows Server version 2004 10.0.19041.1415
- Microsoft Windows 10 Version 20H2 10.0.19042.1415
- Microsoft Windows Server version 20H2 10.0.19042.1415
- Microsoft Windows 11 version 21H2 10.0.22000.376
- Microsoft Windows 10 Version 21H2 10.0.19044.1415
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Windows 10 Version 1909
- Microsoft Windows 10 Version 21H1
- Microsoft Windows Server 2022
- Microsoft Windows 10 Version 2004
- Microsoft Windows Server version 2004
- Microsoft Windows 10 Version 20H2
- Microsoft Windows Server version 20H2
- Microsoft Windows 11 version 21H2
- Microsoft Windows 10 Version 21H2
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-43237
patch, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-22-018/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-43237
- NVD CVE-2021-43237
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.