Security readout for executives and security teams
CVE-2018-8405 is a Windows privilege escalation flaw in the DirectX Graphics Kernel. A local low-privileged user could gain higher system privileges after the driver mishandles objects in memory. It is not a remote entry point by itself, but CISA lists it as known exploited, increasing urgency. Exposure is likely on unpatched Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, Windows Server 2016, Windows 10, and listed Windows 10 Server Core versions. Internet exposure is not the primary factor; local access or foothold on an affected host matters most. High priority for Windows fleets, especially legacy systems. This is not a standalone remote compromise, but known exploitation means attackers may use it after gaining an initial foothold to escalate privileges and deepen compromise. Mitigation focus: Apply Microsoft guidance and security updates for CVE-2018-8405.; Prioritize remediation because CISA lists this vulnerability as known exploited.; Replace or isolate unsupported affected Windows versions until remediated..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-404: Exact CWE lookup
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Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-8405 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8405CVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8405CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Resource Shutdown or Release
Improper Resource Shutdown or Release represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.