How severe is CVE-2021-25237?

CVE-2021-25237 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-25237 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25237?

CVE-2021-25237 affects Trendmicro Apex One. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25237?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-25237 published?

CVE-2021-25237 was published on 2021-02-04 and last updated on 2026-06-17.

CVE-2021-25237

CVE-2021-25237 is a medium-severity vulnerability in Trendmicro Apex One with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Trendmicro Apex One
Published: 2021-02-04
Last modified: 2026-06-17

Description

An improper access control vulnerability in Trend Micro Apex One (on-prem) could allow an unauthenticated user to obtain information about the managing port used by agents.

Frequently asked questions

What is CVE-2021-25237?: An improper access control vulnerability in Trend Micro Apex One (on-prem) could allow an unauthenticated user to obtain information about the managing port used by agents.
How severe is CVE-2021-25237?: CVE-2021-25237 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-25237 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25237?: CVE-2021-25237 affects Trendmicro Apex One. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25237?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25237 published?: CVE-2021-25237 was published on 2021-02-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*

More vulnerabilities in Trendmicro Apex One

CVE-2025-71211 — Critical (CVSS 9.8): A vulnerability in the Trend Micro Apex One management console could allow a remote attacker to upload malicious code…
CVE-2025-71210 — Critical (CVSS 9.8): A vulnerability in the Trend Micro Apex One management console could allow a remote attacker to upload malicious code…
CVE-2023-32557 — Critical (CVSS 9.8): A path traversal vulnerability in the Trend Micro Apex One and Apex One as a Service could allow an unauthenticated…
CVE-2023-25143 — Critical (CVSS 9.8): An uncontrolled search path element vulnerability in the Trend Micro Apex One Server installer could allow an attacker…
CVE-2022-40144 — Critical (CVSS 9.8): A vulnerability in Trend Micro Apex One and Trend Micro Apex One as a Service could allow an attacker to bypass the…
CVE-2022-26871 — Critical (CVSS 9.8): An arbitrary file upload vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to…

All CVEs affecting Trendmicro Apex One →