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CVE-2021-36741: Trend Micro Multiple Products Improper Input Validation Vulnerability

criticalknown exploitedCVE-2021-36741
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows a remote attacker to upload files.

CSIRTS triage

vendor: Trend Microproduct: Apex OneRemote code execution
What
There is an improper input validation vulnerability that allows a remote attacker to upload files.
Who is affected
Deployments of Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security.
Urgency
Remediation is urgent due to the critical severity and confirmed exploitation.
Action
Apply the latest patches provided by Trend Micro.

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

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-36741

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-36741coverage & exploitation statusNVD · CVE.org

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