How severe is CVE-2022-40139?

CVE-2022-40139 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-40139 being actively exploited?

Yes. CVE-2022-40139 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-15, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2022-40139?

CVE-2022-40139 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-2022-40139?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2022-40139 have an EU (EUVD) identifier?

Yes. CVE-2022-40139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-43457. It is also flagged as exploited in the EUVD (since 2022-09-15).

When was CVE-2022-40139 published?

CVE-2022-40139 was published on 2022-09-19 and last updated on 2026-06-17.

CVE-2022-40139

CVE-2022-40139 is a high-severity vulnerability in Trendmicro Apex One with a CVSS 3.x base score of 7.2. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-09-15).

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-09-15)
EU (EUVD) id: EUVD-2022-43457
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-09-15)
Affected product: Trendmicro Apex One
Published: 2022-09-19
Last modified: 2026-06-17

Description

Improper validation of some components used by the rollback mechanism in Trend Micro Apex One and Trend Micro Apex One as a Service clients could allow a Apex One server administrator to instruct affected clients to download an unverified rollback package, which could lead to remote code execution. Please note: an attacker must first obtain Apex One server administration console access in order to exploit this vulnerability.

Frequently asked questions

What is CVE-2022-40139?: Improper validation of some components used by the rollback mechanism in Trend Micro Apex One and Trend Micro Apex One as a Service clients could allow a Apex One server administrator to instruct affected clients to download an unverified rollback package, which could lead to remote code execution. Please note: an attacker must first obtain Apex One server administration console access in order to exploit this vulnerability.
How severe is CVE-2022-40139?: CVE-2022-40139 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-40139 being actively exploited?: Yes. CVE-2022-40139 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-15, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-40139?: CVE-2022-40139 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-2022-40139?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-40139 have an EU (EUVD) identifier?: Yes. CVE-2022-40139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-43457. It is also flagged as exploited in the EUVD (since 2022-09-15).
When was CVE-2022-40139 published?: CVE-2022-40139 was published on 2022-09-19 and last updated on 2026-06-17.

References

Affected products (2)

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

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