CVE-2020-8599
CVE-2020-8599 is a critical-severity vulnerability in Trendmicro Apex One with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2021-11-03).
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 12% (96th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2021-11-03)
- EU (EUVD) id: EUVD-2020-29447
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2021-11-03)
- Affected product: Trendmicro Apex One
- Published:
- Last modified:
Description
Trend Micro Apex One (2019) and OfficeScan XG server contain a vulnerable EXE file that could allow a remote attacker to write arbitrary data to an arbitrary path on affected installations and bypass ROOT login. Authentication is not required to exploit this vulnerability.
Frequently asked questions
- What is CVE-2020-8599?
- Trend Micro Apex One (2019) and OfficeScan XG server contain a vulnerable EXE file that could allow a remote attacker to write arbitrary data to an arbitrary path on affected installations and bypass ROOT login. Authentication is not required to exploit this vulnerability.
- How severe is CVE-2020-8599?
- CVE-2020-8599 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-2020-8599 being actively exploited?
- Yes. CVE-2020-8599 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2021-11-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2020-8599?
- CVE-2020-8599 primarily affects Trendmicro Apex One. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-8599?
- 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-2020-8599 have an EU (EUVD) identifier?
- Yes. CVE-2020-8599 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-29447. It is also flagged as exploited in the EUVD (since 2021-11-03).
- When was CVE-2020-8599 published?
- CVE-2020-8599 was published on 2020-03-18 and last updated on 2026-06-17.
References
- https://success.trendmicro.com/jp/solution/000244253
- https://success.trendmicro.com/solution/000245571
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8599
Affected products (3)
- cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*
- cpe:2.3:a:trendmicro:officescan:xg:-:*:*:*:*:*:*
- cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*
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…
- CVE-2025-71210 — Critical (CVSS 9.8): A vulnerability in the Trend Micro Apex One management console could allow a remote attacker to upload malicious code…
- CVE-2023-32557 — Critical (CVSS 9.8): A path traversal vulnerability in the Trend Micro Apex One and Apex One as a Service could allow an unauthenticated…
- CVE-2023-25143 — Critical (CVSS 9.8): An uncontrolled search path element vulnerability in the Trend Micro Apex One Server installer could allow an attacker…
- CVE-2022-40144 — Critical (CVSS 9.8): A vulnerability in Trend Micro Apex One and Trend Micro Apex One as a Service could allow an attacker to bypass the…
- CVE-2022-26871 — Critical (CVSS 9.8): An arbitrary file upload vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to…