Critical File handling

CVE-2025-71210 — Path Traversal in Trend Micro, Inc. Apex One

A vulnerability in the Trend Micro Apex One management console could allow a remote attacker to upload malicious code and execute commands on affected installations. Please note: although this vulnerability carries a technical critical CVSS rating, this was reported via responsible disclosure via a researcher through the Zero Day Initiative. The SaaS versions of the product have already been mitigated and no customer action required. For this particular vulnerability, an attacker must have access to the Trend Micro Apex One Management Console, so customers that have their console�s IP address exposed externally should consider mitigating factors such as source restrictions if not already applied.

Published May 21, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: trendmicro

Moderate

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 3.8% (30-day exploitation probability)+13
Technical severity (critical)+10
Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

3.81%

ahead of 90% of scored CVEs · Oct 14, 2026

Affects

Trend Micro, Inc.

Apex One and 2 more

CVSS base

9.8

Critical · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

Yes

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Trend Micro, Inc. Apex One, Trend Micro, Inc. TrendAI Apex One, Trend Micro, Inc. TrendAI Apex One as a Service).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (file handling), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Trend Micro, Inc.	Apex One	< 14.0.0.14136< 14.0.20315	Vulnerable	NIST National Vulnerability Database
Trend Micro, Inc.	TrendAI Apex One	≥ 2019 (14.0) and < 14.0.0.14136	Vulnerable	CVE Program (cve.org) e CISA ADP
Trend Micro, Inc.	TrendAI Apex One as a Service	≥ SaaS and < 14.0.20315	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
9.8	CVSS 3.1	Critical	3.9	5.9	security@trendmicro.com via NIST National Vulnerability Database
9.8	CVSS 3.1	Critical	—	—	trendmicro via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: security@trendmicro.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-22 · Path Traversal

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 3.81%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Monitor file creation in web directories and paths with traversal sequences (../).

web/proxy/WAF logsnetwork IDS/IPSfile integrity (FIM)endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · trend micro, inc./trendai apex one, trend micro, inc./trendai apex one as a service
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 9.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
May 21, 2026 · trendmicro

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

2 on the record

success.trendmicro.com/en-US/solution/KA-0022458
Vendor Advisory, NIST National Vulnerability Database
www.zerodayinitiative.com/advisories/ZDI-26-136/
Third Party Advisory, NIST National Vulnerability Database

Elsewhere on this site

Trend Micro, Inc.
every CVE for this vendor

File handling
same class

CWE-22
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-45208 TOCTOU Race Condition in Trend Micro, Inc. Apex One May 21, 2026
High CVE-2026-45207 An origin validation vulnerability in the Apex One/SEP agent could allow a local… May 21, 2026
High CVE-2026-45206 An origin validation vulnerability in the Apex One/SEP agent could allow a local… May 21, 2026
High CVE-2026-34929 An origin validation vulnerability in the Apex One/SEP agent could allow a local… May 21, 2026
High CVE-2026-34927 An origin validation vulnerability in the Apex One/SEP agent could allow a local… May 21, 2026
High CVE-2026-34928 An origin validation vulnerability in the Apex One/SEP agent could allow a local… May 21, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-71210 is "Path Traversal in Trend Micro, Inc. Apex One", rated Critical. It affects Apex One (Trend Micro, Inc.); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.8 describes technical severity. EPSS 3.81% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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