CVE-2023-32557Network attack vector

Unauthenticated SYSTEM code execution via upload path traversal

Published Jun 26, 2023 · Updated Dec 4, 2024

Path traversal in Trend Micro Apex One 2019 before 14.0.0.12024 allows remote attackers to upload files and execute code as SYSTEM. The Management Server upload path fails to confine a crafted pathname to the intended directory, permitting an attacker-chosen file to be written outside it. The management server must be remotely reachable; no authentication or user interaction is required, and successful exploitation grants system privileges.

CVSS severity9.8
Critical
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Trend Micro Apex One 2019 before 14.0.0.12024 allows remote attackers to upload files and execute code as SYSTEM. The Management Server upload path fails to confine a crafted pathname to the intended directory, permitting an attacker-chosen file to be written outside it. The management server must be remotely reachable; no authentication or user interaction is required, and successful exploitation grants system privileges.

The record

CVE
CVE-2023-32557
Published
Jun 26, 2023
Updated
Dec 4, 2024
Vendor
Trend Micro
Product
Apex One
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2019 <14.0.0.12024

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trend Micro · Apex Oneversion=2019 <14.0.0.12024

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8Trend MicroCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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