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CVE-2025-49154VulnerabilityPublished

CVE-2025-49154: Trend Micro Apex One · Improper Access Control

Affects Trend Micro Apex OneSource CVE Database V5

0

Not known to be exploited · CVSS 8.7 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

1. Immediate mitigation should focus on minimizing the risk of initial local code execution by enforcing strict endpoint security hygiene, including application whitelisting, least privilege principles, and continuous monitoring for suspicious local activity. 2. Restrict access to systems running Trend Micro Apex One and Worry-Free Business Security to trusted personnel only, and implement robust authentication and authorization controls to prevent unauthorized local access. 3. Monitor logs and system behavior for unusual attempts to access or modify memory-mapped files associated with Trend Micro products. 4. Coordinate with Trend Micro for timely updates and patches; once patches are released, prioritize rapid deployment across all affected systems. 5. Employ endpoint detection and response (EDR) solutions capable of detecting post-compromise activities such as unauthorized file modifications or privilege escalations. 6. Conduct regular security assessments and penetration tests focusing on local privilege escalation vectors to identify and remediate potential initial footholds that could lead to exploitation of this vulnerability. 7. Educate internal teams about the risk of local attacks and the importance of securing endpoints against unauthorized code execution. 8. Consider network segmentation to limit lateral movement if a local compromise occurs, thereby containing potential exploitation impact.

Description

An insecure access control vulnerability in Trend Micro Apex One and Trend Micro Worry-Free Business Security could allow a local attacker to overwrite key memory-mapped files which could then have severe consequences for the security and stability of affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

References

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