● Critical · CVSS 9.8

How to Fix CVE-2025-49217: Trend Micro Endpoint Encryption Policy Server (Bundle Sibling)

Q: Is CVE-2025-49217 actively exploited?

Yes. CVE-2025-49217 is on the CISA Known Exploited Vulnerabilities catalog, so federal civilian agencies are required to patch on the published deadline. Most enterprises treat the same date as the practical floor.

Q: What is the CVSS severity of CVE-2025-49217?

Critical. See the advisory for the full CVSS vector.

Q: Where can I read the official advisory?

See https://success.trendmicro.com/en-US/solution/KA-0019928

Q: Does the patch require a reboot?

It depends on the deployment. Service-only updates usually need a service restart; OS-level fixes require a full reboot. Check the vendor release notes for the exact post-upgrade steps.

⚡ At a glance


Severity	CVSS 9.8, Critical
Actively exploited?	No
Affected	Trend Micro, Inc. Trend Micro Endpoint Encryption Policy Server (< 6.0.0.4013)
Fixed in	Same patched build as CVE-2025-49212
Type (CWE)	CWE-477: Use of Obsolete Function

CVE-2025-49217 is a sibling vulnerability in the same Trend Micro, Inc. Trend Micro Endpoint Encryption Policy Server advisory bundle as CVE-2025-49212. The same patched build closes every CVE in the bundle, so the remediation procedure for CVE-2025-49217 is the same as for the primary write-up.

What's different about CVE-2025-49217?

An insecure deserialization operation in the Trend Micro Endpoint Encryption PolicyServer could lead to a pre-authentication remote code execution on affected installations. Note that this vulnerability is similar to CVE-2025-49213 but is in a different method.

The technical distinction is the specific code path or input vector listed in the description above. Impact is consistent with the bundle: remote code execution on the affected system. The patched build addresses every code path in the advisory in one update.