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TI-2021-18714 Aliases CVE-2021-42278GHSA-chp6-c7f5-h9w9

Active Directory Domain Services Elevation of Privilege Vulnerability

Priority CRITICAL 92Exploited in the wildPublished · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Active Directory Domain Services Elevation of Privilege Vulnerability

Why it matters now

Exploitation Active In CISA KEV since 2022-04-11CISA due date 2022-05-02Known ransomware use
EPSS 0.73297 99th percentileScored 2026-11-07
Fix Fixed Microsoft: 12 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0 to before 6.1.7601.257696.1.7601.25769Patch availableCNA
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 to before 6.1.7601.257696.1.7601.25769Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 to before 6.0.6003.212826.0.6003.21282Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 to before 6.0.6003.212826.0.6003.21282Patch availableCNA
MicrosoftWindows Server 20126.2.9200.0 to before 6.2.9200.235176.2.9200.23517Patch availableCNA
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to before 6.2.9200.235176.2.9200.23517Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.201746.3.9600.20174Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.201746.3.9600.20174Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.477010.0.14393.4770Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.477010.0.14393.4770Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.230010.0.17763.2300Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.230010.0.17763.2300Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.35010.0.20348.350Patch availableCNA
MicrosoftWindows Server version 200410.0.0 to before 10.0.19041.134810.0.19041.1348Patch availableCNA
MicrosoftWindows Server version 20H210.0.0 to before 10.0.19042.134810.0.19042.1348Patch availableCNA
  • Windows Server 2008 R2 Service Pack 1 VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.25769 Fixed in 6.1.7601.25769 Patch available CNA
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation) VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.25769 Fixed in 6.1.7601.25769 Patch available CNA
  • Windows Server 2008 Service Pack 2 VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21282 Fixed in 6.0.6003.21282 Patch available CNA
  • Windows Server 2008 Service Pack 2 (Server Core installation) VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21282 Fixed in 6.0.6003.21282 Patch available CNA
  • Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.23517 Fixed in 6.2.9200.23517 Patch available CNA
  • Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.23517 Fixed in 6.2.9200.23517 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20174 Fixed in 6.3.9600.20174 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20174 Fixed in 6.3.9600.20174 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.4770 Fixed in 10.0.14393.4770 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.4770 Fixed in 10.0.14393.4770 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2300 Fixed in 10.0.17763.2300 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2300 Fixed in 10.0.17763.2300 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.350 Fixed in 10.0.20348.350 Patch available CNA
  • Windows Server version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.1348 Fixed in 10.0.19041.1348 Patch available CNA
  • Windows Server version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.1348 Fixed in 10.0.19042.1348 Patch available CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*before 10.0.19041.1348VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*r2 sp1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.4770VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.2300VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.350VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*before 10.0.19042.1348VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* Versions before 10.0.19041.1348 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.4770 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.2300 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.350 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.1348 Vulnerable ·Microsoft

Remediation

Microsoft 12 updates

  • KB5007263
    Monthly Rollup
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21282
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21282
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21282
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21282
  • KB5007260
    Monthly Rollup
    • Windows Server 2012 6.2.9200.23517
    • Windows Server 2012 (Server Core installation) 6.2.9200.23517
  • KB5007255
    Security Only
    • Windows 8.1 for 32-bit systems 6.3.9600.20174
    • Windows 8.1 for x64-based systems 6.3.9600.20174
    • Windows Server 2012 R2 6.3.9600.20174
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20174
Show 9 more Microsoft updates
  • KB5007247
    Monthly Rollup
    • Windows 8.1 for 32-bit systems 6.3.9600.20174
    • Windows 8.1 for x64-based systems 6.3.9600.20174
    • Windows RT 8.1 6.3.9600.20174
    • Windows Server 2012 R2 6.3.9600.20174
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20174
  • KB5007246
    Security Only
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21282
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21282
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21282
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21282
  • KB5007245
    Security Only
    • Windows Server 2012 6.2.9200.23517
    • Windows Server 2012 (Server Core installation) 6.2.9200.23517
  • KB5007236
    Monthly Rollup
    • Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.25769
    • Windows 7 for x64-based Systems Service Pack 1 6.1.7601.25769
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.25769
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.25769
  • KB5007233
    Security Only
    • Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.25769
    • Windows 7 for x64-based Systems Service Pack 1 6.1.7601.25769
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.25769
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.25769
  • KB5007206
    Security Update
    • Microsoft Edge (Chromium-based) in IE Mode 10.0.17763.2300
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.2300
    • Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.2300
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.2300
    • Windows Server 2019 10.0.17763.2300
    • Windows Server 2019 (Server Core installation) 10.0.17763.2300
  • KB5007205
    Security Update
    • Windows Server 2022 10.0.20348.350
    • Windows Server 2022 (Server Core installation) 10.0.20348.350
  • KB5007192
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.4770
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.4770
    • Windows Server 2016 10.0.14393.4770
    • Windows Server 2016 (Server Core installation) 10.0.14393.4770
  • KB5007186
    Security Update
    • Microsoft Edge (Chromium-based) in IE Mode 10.0.19041.1348, 10.0.19043.1348, 10.0.19042.1348
    • Windows 10 Version 2004 for 32-bit Systems 10.0.19041.1348
    • Windows 10 Version 2004 for ARM64-based Systems 10.0.19041.1348
    • Windows 10 Version 2004 for x64-based Systems 10.0.19041.1348
    • Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.1348
    • Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.1348
    • Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.1348
    • Windows 10 Version 21H1 for ARM64-based Systems 10.0.19043.1348
    • Windows 10 Version 21H1 for x64-based Systems 10.0.19043.1348
    • Windows Server, version 2004 (Server Core installation) 10.0.19041.1348
    • Windows Server, version 20H2 (Server Core Installation) 10.0.19041.1348, 10.0.19042.1348

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2022-04-11 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2021-42278
  3. 2026-10-03 Alias added: GHSA-chp6-c7f5-h9w9

References

Patch 2

  • TI-2021-11386 HTTP Protocol Stack Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-18722 Active Directory Domain Services Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2021-17496 Microsoft MSHTML Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2021-13113 Microsoft DWM Core Library Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.4
  • TI-2021-19234 Windows Common Log File System Driver Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences