Which products and versions are affected by CVE-2023-0587?

Affected: Apex One (Trendmicro); Trend Micro Apex One versions >= Build 11110. The full list is in the CVE brief.

Is CVE-2023-0587 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2023-0587 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-0587?

Public exploit code is available.

Is there a fix for CVE-2023-0587?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2023-0587 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2023-0587

CriticalPublic exploit

A file upload vulnerability in exists in Trend Micro Apex One server build 11110.

Published Feb 1, 2023 · Updated Mar 27, 2025

Key Facts

Patch immediately

CVE-2023-0587 is a critical-severity vulnerability (CVSS 9.1 v3.1) affecting Apex One (Trendmicro), Trend Micro Apex One.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 60% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

9.1

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

EPSS (30-day exploit likelihood)

60%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2023-0587 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A file upload vulnerability in exists in Trend Micro Apex One server build 11110. Using a malformed Content-Length header in an HTTP PUT message sent to URL /officescan/console/html/cgi/fcgiOfcDDA.exe, an unauthenticated remote attacker can upload arbitrary files to the SampleSubmission directory (i.e., \PCCSRV\TEMP\SampleSubmission) on the server. The attacker can upload a large number of large files to fill up the file system on which the Apex One server is installed.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Apex OneTrendmicro	See advisory	n/a
Trend Micro Apex One	>= Build 11110	n/a

Timeline

Publicly disclosed
Feb 1, 2023
Last updated
Mar 27, 2025

Weakness Type

CWE-434 Unrestricted Upload of File with Dangerous Type

References

otherhttps://www.tenable.com/security/research/tra-2023-5

FAQ

Common Questions.

A file upload vulnerability in exists in Trend Micro Apex One server build 11110.
Affected: Apex One (Trendmicro); Trend Micro Apex One versions >= Build 11110. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2023-0587 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.