Security readout for executives and security teams
Plain-English summary
CVE-2018-6236 is a local privilege escalation issue in Trend Micro Maximum Security (Consumer) 2018. A person or malware already able to run low-privileged code on a vulnerable system may gain higher privileges through the product's driver handling.
Executive priority
Treat this as a legacy endpoint hygiene issue with moderate urgency. It is not shown as actively exploited, but it can increase the impact of malware already running on a vulnerable system.
Technical view
The issue is described as a TOCTOU privilege escalation flaw in the tmusa driver while processing IOCTL 0x222813. The source bundle identifies Trend Micro Maximum Security 2018 as affected and states exploitation requires prior low-privileged local code execution.
Likely exposure
Exposure is likely limited to systems still running Trend Micro Maximum Security (Consumer) 2018 with the vulnerable tmusa driver present. The bundle does not identify enterprise editions, other versions, operating systems, or CPEs.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. Practical risk depends on whether an attacker already has local code execution, such as through malware, phishing, or another foothold.
Researcher notes
Evidence is specific on the vulnerable driver path and IOCTL but incomplete on CVSS, CWE, affected platforms, and exact remediation details. Avoid broad product assumptions beyond Maximum Security (Consumer) 2018.
Mitigation direction
- Check Trend Micro's advisory for the vendor-supported update or remediation path.
- Remove or upgrade unsupported Trend Micro Maximum Security 2018 installations.
- Prioritize endpoints where untrusted users can execute local code.
- Reduce local admin exposure and block untrusted executable delivery where feasible.
Validation and detection
- Inventory endpoints for Trend Micro Maximum Security 2018 installations.
- Confirm whether the tmusa driver is present on identified systems.
- Verify the installed build against Trend Micro's advisory guidance.
- Review endpoint detections for suspicious local privilege escalation behavior.
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-2018-6236 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://esupport.trendmicro.com/en-us/home/pages/technical-support/1119591.aspxCVE reference · x_refsource_CONFIRM
- https://www.zerodayinitiative.com/advisories/ZDI-18-410/CVE reference · x_refsource_MISC
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.