Vulnerability Details : CVE-2021-42287
Used for ransomware!
Active Directory Domain Services Elevation of Privilege Vulnerability
Vulnerability category: Gain privilege
Products affected by CVE-2021-42287
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
CVE-2021-42287 is in the CISA Known Exploited Vulnerabilities Catalog
This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
Microsoft Active Directory Domain Services Privilege Escalation Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2021-42287
Added on
2022-04-11
Action due date
2022-05-02
Exploit prediction scoring system (EPSS) score for CVE-2021-42287
0.74%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42287
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
Microsoft Corporation |
References for CVE-2021-42287
-
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42287
CVE-2021-42287 - Security Update Guide - Microsoft - Active Directory Domain Services Elevation of Privilege VulnerabilityPatch;Vendor Advisory
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