CVE-2020-8599: Trend Micro Apex One and OfficeScan Authentication Bypass Vulnerability
Vulnerability summary
CVE-2020-8599 is a high (CVSS 10.0) vulnerability in Trend Micro Apex One and OfficeScan. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 11.86% chance of exploitation in the next 30 days, higher than 96% of scored vulnerabilities.
Timeline
- 18-03-2020PublishedVulnerability first disclosed.
- 03-11-2021Added to CISA KEVTrend Micro Apex One and OfficeScan Authentication Bypass Vulnerability
- 03-05-2022CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
11.86%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 11.86% on 20-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 03-11-2021
- Federal due date
- 03-05-2022
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-8599
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Trendmicro2 products
- apex_one2019
- officescanxg | xg:sp1
Trend micro1 product
- trend micro officescan, trend micro apex oneOfficeScan XG (12.0), Apex One 2019 (14.0)
2 vendors · 3 products
References
3 links- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8599Government ResourceUS Government Resource