Security readout for executives and security teams
Plain-English summary
CVE-2019-0984 is a Windows local privilege escalation flaw in the Common Log File System driver. A logged-in attacker could run a crafted application and gain elevated control on an affected system. This is not described as remotely exploitable, but it can turn a low-privileged foothold into full host compromise.
Executive priority
Treat this as a high-priority patching issue for legacy and multi-user Windows systems. It is less urgent than a remote unauthenticated flaw, but it materially increases the impact of phishing, malware, or insider access by enabling elevation to a more privileged context.
Technical view
Microsoft describes improper memory-object handling in the Windows CLFS driver. Exploitation requires local logon and execution of a specially crafted application. The CVSS 3.1 score is 7.0 with local attack vector, low privileges required, high complexity, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is primarily older or unpatched Windows endpoints and servers listed by Microsoft, including Windows 7, Windows 8.1, Windows 10 versions 1507 through 1809, Windows Server 2008 SP2, Server 2016, Server 2019, and Server Core variants.
Exploitation context
The provided bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS temporal vector lists proof-of-concept exploit maturity, but exploitation still requires authenticated local access and running a crafted application on the target.
Researcher notes
Focus validation on local privilege boundaries and patch state, not network exposure. The sources identify the vulnerable component and exploitation prerequisites, but do not provide root-cause details, exploit procedure, or non-patch vendor mitigations beyond Microsoft’s update.
Mitigation direction
- Apply the relevant Microsoft security update for CVE-2019-0984.
- Confirm Microsoft guidance for each affected Windows release and build.
- Prioritize patching shared servers, VDI, and multi-user Windows systems.
- Restrict local logon and application execution to trusted users where patching is delayed.
- Retire or isolate affected systems that cannot receive the update.
Validation and detection
- Inventory Windows versions and builds against Microsoft’s affected product list.
- Verify patch status using endpoint management or vulnerability scanning records.
- Confirm CLFS-related CVE-2019-0984 detections are closed after remediation.
- Review local privilege escalation alerts on systems patched late.
- Document any unsupported systems and compensating controls.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Privilege 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-2019-0984 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
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.
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:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Common Log File System Driver Elevation of Privilege VulnerabilityCVE reference · vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0984CVE reference · x_refsource_MISC, x_transferred
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.