SARA / Free Tools / KEV / CVE-2018-8405

CVE-2018-8405 on CISA KEV

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory, aka "DirectX Graphics Kernel Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server

CISA KEV — Actively Exploited

Microsoft DirectX Graphics Kernel Privilege Escalation Vulnerability

Vendor / Product
— / Microsoft / DirectX Graphics Kernel (DXGKRNL)
Added to KEV
2022-03-28
BOD 22-01 due
2022-04-18
Ransomware use
Known
CVSS / EPSS
· EPSS 49.99%

01What CISA says about this vulnerability

An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory, aka "DirectX Graphics Kernel Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8400, CVE-2018-8401, CVE-2018-8406.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
MicrosoftWindows Server 2012 R2(Server Core installation)
MicrosoftWindows RT 8.1Windows RT 8.1
MicrosoftWindows Server 2016(Server Core installation)
MicrosoftWindows 8.132-bit systems, x64-based systems
MicrosoftWindows 1032-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems, Version 1703 for 32-bit Systems, Version 1703 for x64-based Systems, Version 1709 for 32-bit Systems, Version 1709 for x64-based Systems, Version 1803 for 32-bit Systems, Version 1803 for x64-based Systems, x64-based Systems
MicrosoftWindows 10 Serversversion 1709 (Server Core Installation), version 1803 (Server Core Installation)

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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