CVE-2021-25231
An improper access control vulnerability in Trend Micro Apex One (on-prem and SaaS), OfficeScan XG SP1, and Worry-Free Business Security 10.0 SP1 could allow an unauthenticated user to obtain information about a specific hotfix history file.
Does this matter?
Lower severity and a low EPSS score (2.15%). Track it; it rarely justifies an emergency change on its own.
Description
An improper access control vulnerability in Trend Micro Apex One (on-prem and SaaS), OfficeScan XG SP1, and Worry-Free Business Security 10.0 SP1 could allow an unauthenticated user to obtain information about a specific hotfix history file.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.15% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- trendmicro/apex one · trendmicro/officescan · trendmicro/worry-free business security
- Source
- security@trendmicro.com
EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://success.trendmicro.com/solution/000284202Patch, Vendor Advisory
- https://success.trendmicro.com/solution/000284205Patch, Vendor Advisory
- https://success.trendmicro.com/solution/000284206Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-106/Third Party Advisory, VDB Entry
- https://success.trendmicro.com/solution/000284202Patch, Vendor Advisory
- https://success.trendmicro.com/solution/000284205Patch, Vendor Advisory
- https://success.trendmicro.com/solution/000284206Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-106/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.