CVE-2021-42278 (GCVE-0-2021-42278)
Vulnerability from cvelistv5 – Published: 2021-11-10 00:47 – Updated: 2025-10-21 23:25Title
Active Directory Domain Services Elevation of Privilege Vulnerability
Summary
Active Directory Domain Services Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Elevation of Privilege
- CWE-noinfo Not enough information
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows Server 2019 |
Affected:
10.0.0 , < 10.0.17763.2300
(custom)
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2300:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.0 , < 10.0.17763.2300
(custom)
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2300:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.0 , < 10.0.20348.350
(custom)
cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.350:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server version 2004 |
Affected:
10.0.0 , < 10.0.19041.1348
(custom)
cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1348:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server version 20H2 |
Affected:
10.0.0 , < 10.0.19042.1348
(custom)
cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1348:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.0 , < 10.0.14393.4770
(custom)
cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4770:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.0 , < 10.0.14393.4770
(custom)
cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4770:*:*:*:*:*:*:* |
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.0 , < 6.0.6003.21282
(custom)
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21282:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.0 , < 6.0.6003.21282
(custom)
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21282:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21282:*:*:*:*:*:x86:* |
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.0 , < 6.0.6003.21282
(custom)
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21282:*:*:*:*:*:x86:* |
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.0 , < 6.1.7601.25769
(custom)
cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25769:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.0.0 , < 6.1.7601.25769
(custom)
cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25769:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.0 , < 6.2.9200.23517
(custom)
cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23517:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.0 , < 6.2.9200.23517
(custom)
cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23517:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.0 , < 6.3.9600.20174
(custom)
cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20174:*:*:*:*:*:x64:* |
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.0 , < 6.3.9600.20174
(custom)
cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20174:*:*:*:*:*:x64:* |
Date Public
2021-11-09 08:00
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 58d684a4-6004-4cad-8944-7854b924424e
Exploited: Yes
Timestamps
First Seen: 2022-04-11
Asserted: 2022-04-11
Scope
Notes: KEV entry: Microsoft Active Directory Domain Services Privilege Escalation Vulnerability | Affected: Microsoft / Active Directory | Description: Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-02 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-42278
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Active Directory |
| Due Date | 2022-05-02 |
| Date Added | 2022-04-11 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Active Directory Domain Services Privilege Escalation Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d0105b8c-3d63-46a0-ba7d-5f34c61a02bf
Exploited: Yes
Timestamps
First Seen: 2022-04-11
Asserted: 2022-04-11
Scope
Notes: KEVIntel entry: Active Directory Domain Services Elevation of Privilege Vulnerability | Affected: Microsoft / Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server version 2004, Windows Server version 20H2, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) | CVSS: 7.5 (HIGH) | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Active Directory Domain Services Elevation of Privilege Vulnerability |
| Vendor | Microsoft |
| Product | Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server version 2004, Windows Server version 20H2, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) |
| Added Date | 2022-04-11T00:00:00.000Z |
| Cvss Score | 7.5 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | yes |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-19 12:47 UTC
| Updated: 2026-06-19 12:47 UTC
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"id": "CVE-2021-42278",
"lastModified": "2024-11-21T06:27:30.843",
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"published": "2021-11-10T01:19:44.300",
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"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Modified",
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},
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"dataType": "CVE_RECORD",
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}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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