Security readout for executives and security teams
Plain-English summary
CVE-2023-0400 is a Trellix DLP for Windows protection bypass. A logged-in local user could upload sensitive data from a mapped drive into web email without DLP blocking it. This weakens a data-loss control, but requires local access and user interaction.
Executive priority
Treat this as a moderate-priority data-loss control failure. It is not a remote compromise issue, but it can undermine confidence in DLP where mapped drives and web email are used to handle sensitive data.
Technical view
Trellix Data Loss Prevention for Windows 11.9.100 had a control-flow issue categorized as CWE-670. The bypass affected uploads from mapped drives to web email clients; equivalent local-drive uploads were blocked. Trellix addressed the issue in version 11.10.0.
Likely exposure
Organizations using Trellix Data Loss Prevention for Windows version 11.9.100 are the stated exposure group. The bundle says versions prior to 11.9 were not affected in this behavior and default status is otherwise unaffected.
Exploitation context
The CVSS vector requires local access, low privileges, and user interaction. The source bundle does not report active exploitation, and this CVE is not marked KEV. Impact is primarily data-control bypass and potential unauthorized movement of sensitive information.
Researcher notes
The key distinction is source path handling: mapped-drive uploads bypassed protection in 11.9.100, while local-drive uploads were blocked. The bundle provides no exploit proof, detection indicators, or workaround beyond the vendor-fixed version.
Mitigation direction
- Upgrade affected Trellix DLP for Windows 11.9.x deployments to version 11.10.0.
- Confirm Trellix advisory SB10394 applicability before production rollout.
- Prioritize endpoints handling regulated or business-critical sensitive data.
- Review DLP policies covering web email and mapped-drive data handling.
- Monitor for allowed sensitive uploads during the vulnerable deployment period.
Validation and detection
- Inventory Trellix DLP for Windows versions and identify 11.9.100 endpoints.
- Confirm upgraded endpoints report version 11.10.0 or later.
- Review DLP logs for mapped-drive web email uploads during exposure.
- Run authorized regression testing for mapped-drive upload blocking.
- Document any compensating controls until all affected endpoints are upgraded.
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-670: 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 lookupCVE-2023-0400 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
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:L/UI:R/S:C/C:N/I:H/A:N1.54Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kcm.trellix.com/corporate/index?page=content&id=SB10394&locale=en_USCVE 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.
Always-Incorrect Control Flow Implementation
Always-Incorrect Control Flow Implementation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.