Home/CVE/A link following denial-of-service (DoS) vulnerability in the Trend Micro Security (Consumer) 2021 familiy of products c
CVE

CVE-2021-44023

A link following denial-of-service (DoS) vulnerability in the Trend Micro Security (Consumer) 2021 familiy of products c

A link following denial-of-service (DoS) vulnerability in the Trend Micro Security (Consumer) 2021 familiy of products could allow an attacker to abuse the PC Health Checkup feature of the product to create symlinks that would allow modification of files which could lead to a denial-of-service.

HIGH · CVSS 7.1 EPSS 0.00213
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-59Improper Link Resolution Before File Access ('Link Following')
▤

Affected Products & Versions

4
trendmicro antivirus\+ security 2021<= 17.0
trendmicro internet security 2021<= 17.0
trendmicro maximum security 2021<= 17.0
trendmicro premium security 2021<= 17.0
◈

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

7.1
HIGH · 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 NVD16 Dec 2021 · 03:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://helpcenter.trendmicro.com/en-us/article/tmka-10867Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1536/Third Party AdvisoryVDB Entry
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