Security readout for executives and security teams
Plain-English summary
This flaw lets someone with Apex One server administrator access push an unverified rollback package to clients, potentially running code remotely on protected endpoints. It is not a first-step internet takeover bug, but CISA KEV status means exploitation has been observed and affected deployments deserve urgent attention.
Executive priority
Treat this as a high-priority endpoint management risk. Although exploitation requires admin console access, successful abuse could affect many managed clients. KEV listing raises urgency, especially for environments where endpoint management infrastructure is broadly trusted.
Technical view
CVE-2022-40139 is improper validation in the rollback mechanism used by Trend Micro Apex One and Apex One as a Service clients. An Apex One server administrator can cause clients to download an unverified rollback package, leading to remote code execution. CVSS 3.1 is 7.2 with high privileges required.
Likely exposure
Organizations using Trend Micro Apex One 2019 on-premises or Apex One as a Service clients may be exposed. The practical risk is highest where Apex One server administration console accounts are compromised, overprivileged, poorly monitored, or reachable by more administrators than necessary.
Exploitation context
CISA lists CVE-2022-40139 in the Known Exploited Vulnerabilities catalog, supporting active exploitation. The source description says exploitation requires prior Apex One server administration console access, so attackers likely need stolen, abused, or otherwise obtained admin access before triggering client-side code execution.
Researcher notes
The supplied sources do not include fixed build numbers or detailed mitigation text. Do not infer affected versions beyond Apex One 2019 on-premises and SaaS clients. Validation should focus on vendor advisory comparison, admin access review, and evidence of rollback-package activity.
Mitigation direction
- Review and apply Trend Micro advisory 000291528 guidance.
- Prioritize remediation because CISA KEV lists active exploitation.
- Restrict Apex One console administration to required administrators only.
- Review, rotate, and harden Apex One administrator credentials.
- Monitor rollback package and client update activity for anomalies.
Validation and detection
- Inventory all Apex One 2019 on-premises and SaaS client deployments.
- Compare deployed versions and builds against Trend Micro advisory 000291528.
- Check whether any affected systems remain within KEV remediation scope.
- Review Apex One admin logs for rollback or package deployment activity.
- Investigate unusual administrator logins before and after package events.
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.
Execution 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 lookupCVE-2022-40139 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
- 7.2 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://success.trendmicro.com/solution/000291528CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-40139CVE 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.