CVE-2025-53378: Trend Micro Worry-Free Business Security Services · Missing Authentication
Affects Trend Micro Worry-Free Business Security ServicesSource CVE Database V5
Not known to be exploited · CVSS 7.6 High.
Data as of 26 Oct 2026, 09:08 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26 Oct 2026.
What to do
AI-suggested
European organizations using the SaaS version of Trend Micro Worry-Free Business Security Services should ensure that their agents are updated promptly through the official Trend Micro monthly maintenance updates, as this vulnerability has been addressed in those releases. It is critical to verify that all endpoints are running the latest SaaS agent version and that update policies enforce timely patch deployment. Organizations should also implement network segmentation and monitoring to detect unusual communications to or from endpoint agents, which could indicate exploitation attempts. Employing endpoint detection and response (EDR) tools alongside WFBSS can provide additional layers of detection in case the agent is compromised. User training to recognize and avoid phishing or social engineering attempts is essential, given the requirement for user interaction in exploitation. Finally, organizations should review their incident response plans to include scenarios involving endpoint security agent compromise and conduct regular security audits to verify agent integrity and configuration.
Description
A missing authentication vulnerability in Trend Micro Worry-Free Business Security Services (WFBSS) agent could have allowed an unauthenticated attacker to remotely take control of the agent on affected installations. Also note: this vulnerability only affected the SaaS client version of WFBSS only, meaning the on-premise version of Worry-Free Business Security was not affected, and this issue was addressed in a WFBSS monthly maintenance update. Therefore no other customer action is required to mitigate if the WFBSS agents are on the regular SaaS maintenance deployment schedule and this disclosure is for informational purposes only.