Security readout for executives and security teams
Plain-English summary
CVE-2023-3438 is a Windows installation service misconfiguration in Trellix MOVE 4.10.x and earlier. A local user with sufficient privileges could place code in the unquoted service path, potentially gaining higher privileges and stopping antimalware services. Sources do not show remote exploitation or active exploitation.
Executive priority
Treat as a moderate-priority endpoint hardening issue. It is not described as remotely exploitable or actively exploited, but it affects antimalware service resilience. Prioritize validation on Trellix MOVE Windows systems and follow vendor guidance for remediation.
Technical view
The issue is CWE-428 in the Trellix MOVE Windows install service mvagtsce.exe. The service path was unquoted, allowing local path hijacking under the conditions described by the CVE. CVSS 3.1 is 4.4 with local attack vector, low complexity, high privileges required, no user interaction, and availability impact only.
Likely exposure
Exposure is limited to Windows deployments of Trellix MOVE 4.10.x and earlier that include the affected install service. Systems without Trellix MOVE, non-Windows deployments, or versions outside the affected range are not shown as affected in the provided sources.
Exploitation context
The source bundle does not indicate CISA KEV listing or active exploitation. Exploitation requires local access and high privileges per the CVSS vector. The main business concern is disruption or disabling of antimalware services after local compromise or insider misuse.
Researcher notes
Evidence is limited to the CVE record, CVE List data, and Trellix advisory reference. Do not assume broader Trellix products are affected. The provided data names Trellix MOVE 4.10.x and earlier Windows install service behavior, CWE-428, and no KEV status.
Mitigation direction
- Identify Trellix MOVE Windows installations at version 4.10.x or earlier.
- Review Trellix advisory SB10404 for vendor-approved updates or mitigations.
- Prioritize affected endpoints where local admin access is broadly available.
- Restrict local administrative access on systems running Trellix MOVE.
- Monitor antimalware service stoppage or unexpected service-path changes.
Validation and detection
- Inventory hosts for Trellix MOVE and installed version details.
- Confirm whether mvagtsce.exe service exists on Windows systems.
- Check service configuration for unquoted executable paths.
- Review endpoint logs for unexpected antimalware service stops.
- Verify remediation status against Trellix SB10404 guidance.
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.
CWE-428: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
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-2023-3438 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
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/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.
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:H/UI:N/S:U/C:N/I:N/A:H0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://kcm.trellix.com/corporate/index?page=content&id=SB10404CVE reference
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.
Unquoted Search Path or Element
Unquoted Search Path or Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.