CVE-2021-36742

criticalknown exploitedcovered by 1 sourcefirst seen 2021-11-03

Actively exploited. CVE-2021-36742 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows for privilege escalation.

CSIRTS triage

vendor: Trend Micro product: Apex One, Apex One as a Service, Worry-Free Business Security Privilege escalation

What: An improper input validation vulnerability allows for privilege escalation in multiple Trend Micro products.
Who is affected: Users of Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security are affected.
Urgency: Immediate remediation is necessary due to active exploitation and critical severity.
Action: Apply the latest updates for the affected Trend Micro products.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 71% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalexploitedCVE-2021-36742: Trend Micro Multiple Products Improper Input Validation Vulnerabilitycisa-kev · 2021-11-03

External references

NVD record for CVE-2021-36742

CVE.org record

CISA KEV catalog

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