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Apex OneApplication · Trendmicro

CVE-2026-45207

HIGH · 7.8 CVSS v3.1 Published 2026-05-21
Fix available
A fix is available. Upgrade to 14.0.0.17079 / 14.0.20731 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileges on affected installations. This is similar to CVE-2026-45206 but exists in a different process protection communication mechanism. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Apex One and Symantec Endpoint Protection (SEP) agents contain an origin validation vulnerability in their process protection communication mechanism. This allows a local attacker with low-privileged code execution to escalate privileges to SYSTEM level by exploiting insufficient validation of communication between protected processes.

MitigationApply vendor patches immediately when available. Until then, minimize the attack surface by restricting user privileges to the minimum necessary and monitoring for suspicious process activity.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Apex OneApplication
Affected:< 14.0.0.17079< 14.0.20731

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed endpoint security product
    Check if Trend Micro Apex One or SEP (Symantec Endpoint Protection) agent is installed on the system via installed programs list or service information
    Affected if The product is Apex One or SEP agent
  2. Determine installed Apex One version
    Use the product's built-in version information (typically via system tray icon, help menu, or registry under HKLM\SOFTWARE\TrendMicro\Apex One)
    Affected if Version is below 14.0.0.17079 or below 14.0.20731
  3. Verify process protection feature status
    Check if Apex One process protection or equivalent self-defense feature is enabled in the security agent configuration
    Affected if Process protection module is active and running
  4. Monitor for privileged process communication
    Use process monitoring tools (such as Sysinternals Process Monitor) to observe outbound communication attempts from low-privilege processes to protected Apex One/SEP processes
    Affected if Low-privileged processes are able to send messages to security agent protected processes

A system is affected if Apex One is installed with a version below 14.0.0.17079 or 14.0.20731 and the process protection feature is enabled, allowing untrusted processes to communicate with protected security agent processes.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 14.0.0.17079 / 14.0.20731 or later
Fixed in 14.0.0.1707914.0.20731
Interim mitigation

Apply vendor patches immediately when available. Until then, minimize the attack surface by restricting user privileges to the minimum necessary and monitoring for suspicious process activity.

Recommended fix High confidence

Apex One version 14.0.0.17079 or later, or version 14.0.20731 or later

  1. 1. Verify current Apex One agent version by checking the installed software or querying the client through the Apex One server management console.
  2. 2. Download the latest Apex One security patch from the Trend Micro Download Center or access the patch through the Apex One server.
  3. 3. For standalone agents: Uninstall the current Apex One agent version and install the patched version (14.0.0.17079 or later / 14.0.20731 or later).
  4. 4. For server-managed agents: Push the update from the Apex One server console to all managed clients, ensuring all endpoints receive the patched version.
  5. 5. Verify the update was successful by confirming the installed version matches or exceeds 14.0.0.17079 or 14.0.20731.
  6. 6. Restart the Apex One services if required by the update process.
Caveat Test the upgrade in a staging environment before deploying across production, as with any security update

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Apex One Scoped from the published advisory
  • Consultation8.0 h
  • Implementation4.0 h
  • Testing12.0 h
  • Review / QA6.0 h
30.0 hours of engineering $5,200
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,320.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-45207 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data