Trend Micro Endpoint Encryption Policy Server: Use of Obsolete Function
CVE-2025-49216 is a critical-severity use of obsolete function vulnerability in Trend Micro Endpoint Encryption Policy Server from Trend Micro, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 6.0.0.4013 as the first without the flaw, so updating Trend Micro Endpoint Encryption Policy Server to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.57% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Trend Micro Endpoint Encryption Policy Server to 6.0.0.4013 or a later version.
- Update Trend Micro Endpoint Encryption to 6.0.0.4013 or a later version.
- Read the advisory on success.trendmicro.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Trend Micro | Trend Micro Endpoint Encryption Policy Server | 6.0 up to, but not including, 6.0.0.4013 | 6.0.0.4013 |
| Trend Micro | Trend Micro Endpoint Encryption | before 6.0.0.4013 | 6.0.0.4013 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (trendmicro.com).
Official description
An authentication bypass vulnerability in the Trend Micro Endpoint Encryption PolicyServer could allow an attacker to access key methods as an admin user and modify product configurations on affected installations.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Obsolete Function
The code uses deprecated or obsolete functions, which suggests that the code has not been actively reviewed or maintained.
How developers prevent this class of flaw
- Refer to the documentation for the obsolete function in order to determine why it is deprecated or obsolete and to learn about alternative ways to achieve the same functionality.
- Consider seriously the security implications of using an obsolete function. Consider using alternate functions.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- zerodayinitiative.com/advisories/ZDI-25-373/Third Party Advisory
Other vulnerabilities in Trend Micro Endpoint Encryption Policy Server
- 7.8 High severity
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Use of Obsolete Function vulnerabilities
- 8.8 High severity
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