Home/CVE/A server-side request forgery (SSRF) information disclosure vulnerability in Trend Micro Apex One and Worry-Free Busines
CVE

CVE-2021-25241

A server-side request forgery (SSRF) information disclosure vulnerability in Trend Micro Apex One and Worry-Free Busines

A server-side request forgery (SSRF) information disclosure vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 could allow an unauthenticated user to locate online agents via a sweep.

MEDIUM · CVSS 5.3 EPSS 0.00421
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-918Server-Side Request Forgery (SSRF)
▤

Affected Products & Versions

2
trendmicro apex oneall versions
trendmicro worry-free business securityall versions
◈

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalHackTool - Windows Credential Editor (WCE) Execution
productcriticalWindows Credential Editor Registry
producthighOpenCanary - MSSQL Login Attempt Via Windows Authentication
producthighWindows LAPS Credential Dump From Entra ID
producthighTamper Windows Defender - PSClassic
producthighTamper Windows Defender Remove-MpPreference - ScriptBlockLogging
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security@trendmicro.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Feb 2021 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://success.trendmicro.com/solution/000284202PatchVendor Advisory
https://success.trendmicro.com/solution/000284206PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-114/Third Party AdvisoryVDB Entry
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