Trend Micro Apex One and OfficeScan Remote Code Execution Vulnerability

A migration tool component of Trend Micro Apex One (2019) and OfficeScan XG contains a vulnerability which could allow remote attackers to execute arbitrary code on affected installations (RCE). An attempted attack requires user…

CheckOps priority index

5.6/10 Patch within 7 days

Severity8.8

Probability1.1

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 10.9% higher than 95.9% of CVEs

CVSS 3.1 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:

Exploited for 1,826 days 03 Nov 2021

CISA due date 03 May 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)03 Nov 2021
Exploited in EUVD (ENISA)03 Nov 2021
Used by ransomwareno
EPSS above 10 %10.9%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Affected products

Trend Micro OfficeScan, Trend Micro Apex OneApex One and OfficeScan

Affected versions

OfficeScan XG (12.0), Apex One 2019 (14.0)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

18 Mar 2020
Published
03 Nov 2021
Exploitation reported (ENISA)
03 Nov 2021
Added to the KEV catalog
03 May 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 10.9%

References

Other exploited vulnerabilities from the same vendor

CVE-2026-34926Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability
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CVE-2025-54948Trend Micro Apex One OS Command Injection Vulnerability
6.9 · Background exploitation
CVE-2023-41179Trend Micro Apex One and Worry-Free Business Security Remote Code Execution Vulnerability
4.2 · Background exploitation
CVE-2022-40139Trend Micro Apex One and Apex One as a Service Improper Validation Vulnerability
4.2 · Background exploitation
CVE-2022-26871Trend Micro Apex Central Arbitrary File Upload Vulnerability
6.9 · Background exploitation
CVE-2021-36742Trend Micro Multiple Products Improper Input Validation Vulnerability
4.4 · Background exploitation