How severe is CVE-2023-32557?

CVE-2023-32557 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-32557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32557?

CVE-2023-32557 primarily affects Trendmicro Apex One. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-32557?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-32557 published?

CVE-2023-32557 was published on 2023-06-26 and last updated on 2026-06-17.

CVE-2023-32557

CVE-2023-32557 is a critical-severity vulnerability in Trendmicro Apex One with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Trendmicro Apex One
Published: 2023-06-26
Last modified: 2026-06-17

Description

A path traversal vulnerability in the Trend Micro Apex One and Apex One as a Service could allow an unauthenticated attacker to upload an arbitrary file to the Management Server which could lead to remote code execution with system privileges.

Frequently asked questions

What is CVE-2023-32557?: A path traversal vulnerability in the Trend Micro Apex One and Apex One as a Service could allow an unauthenticated attacker to upload an arbitrary file to the Management Server which could lead to remote code execution with system privileges.
How severe is CVE-2023-32557?: CVE-2023-32557 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-32557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32557?: CVE-2023-32557 primarily affects Trendmicro Apex One. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-32557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-32557 published?: CVE-2023-32557 was published on 2023-06-26 and last updated on 2026-06-17.

References

https://success.trendmicro.com/dcx/s/solution/000293108?language=en_US

Affected products (2)

cpe:2.3:a:trendmicro:apex_one:*:*:*:*:saas:*:*:*
cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*

More vulnerabilities in Trendmicro Apex One

CVE-2025-71211 — Critical (CVSS 9.8): A vulnerability in the Trend Micro Apex One management console could allow a remote attacker to upload malicious code…
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