CVE-2022-40139: 
Trend Micro Apex One Agent vulnerability analysis and mitigation

CVE-2022-40139 is a vulnerability discovered in Trend Micro Apex One and Trend Micro Apex One as a Service clients, related to improper validation of components used by the rollback mechanism. The vulnerability was disclosed in September 2022 and affects both on-premises and SaaS versions of the Trend Micro Apex One product (MITRE CVE, NVD).

The vulnerability stems from improper validation of components used by the rollback mechanism, which could allow an Apex One server administrator to instruct affected clients to download an unverified rollback package. This could potentially lead to remote code execution. The vulnerability has been assigned a CVSS v3 Base Score of 7.2, indicating a high severity level. It requires high privileges (server administration console access) for exploitation (Tenable Blog).

If successfully exploited, this vulnerability could lead to remote code execution on affected client systems. The impact is significant as it could allow an attacker with administrative access to execute arbitrary code on client machines, potentially compromising the security of the entire network (AttackerKB).

Trend Micro has released patches to address this vulnerability. For Apex One 2019 for Windows On-Prem, users should update to Apex One SP1 (b11092/11088). For Apex One (SaaS) for Windows, users should apply the August 2022 Monthly Patch (202208) (Tenable Blog).