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Actively exploited

CVE-2022-26871 Trend Micro Apex Central Arbitrary File Upload Vulnerability

An arbitrary file upload vulnerability in Trend Micro Apex Central could allow for remote code execution.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 31 Mar 2022.
  • Rated Critical severity (CVSS 9.8, scored by CISA).
  • It has been in the catalogue for 1,681 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

An arbitrary file upload vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to upload an arbitrary file which could lead to remote code execution.

Affected Versions

ProductVersions
Trend Micro Trend Micro Apex Central2019 (on-premise), SaaS

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Trend Micro Apex Central. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply updates per vendor instructions.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 21 Apr 2022 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Trend Micro Flaws

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CVE-2026-34926Trend Micro Apex One (On-Premise) Directory Traversal VulnerabilityAdded 21 May 2026CVE-2025-54948Trend Micro Apex One OS Command Injection VulnerabilityAdded 18 Aug 2025CVE-2023-41179Trend Micro Apex One and Worry-Free Business Security Remote Code Execution VulnerabilityAdded 21 Sep 2023CVE-2022-40139Trend Micro Apex One and Apex One as a Service Improper Validation VulnerabilityAdded 15 Sep 2022CVE-2019-18187Trend Micro OfficeScan Directory Traversal VulnerabilityAdded 3 Nov 2021CVE-2020-8467Trend Micro Apex One and OfficeScan Remote Code Execution VulnerabilityAdded 3 Nov 2021

All 12 exploited Trend Micro vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2022-26871 and every other exploited flaw on the list.

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2022-26871
  3. CVE record: CVE-2022-26871
  4. FIRST EPSS
  5. success.trendmicro.com/solution/000290678
  6. success.trendmicro.com/jp/solution/000290660
  7. jpcert.or.jp/english/at/2022/at220008.html
  8. jvn.jp/vu/JVNVU99107357
  9. appweb.trendmicro.com/supportNews/NewsDetail.aspx?id=4435