CISA KEV · Known exploitedHigh

CVE-2022-40139

Trend Micro Apex One and Apex One as a Service

Improper validation of some components used by the rollback mechanism in Trend Micro Apex One and Trend Micro Apex One as a Service clients could allow a Apex One server administrator to instruct affected clients to download an unverified rollback package, which could lead to remote code execution. Please note: an attacker must first obtain Apex One server administration console access in order to exploit this vulnerability.

CVSS: 7.2
EPSS: 2.84%
CISA KEV: Listed
Published: 2022.09.20

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability2.84%

Technical severityCVSS 7.2

Vulnerability overview

Affected product and versions

Product: Trend Micro Apex One and Apex One as a Service
Affected versions: 2019 (on-prem) and SaaS, 2019
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.10.06

1
Identify
Confirm that Trend Micro Apex One and Apex One as a Service and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-353, CWE-641
KEV added: 2022.09.15
Ransomware use: 미확인