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CVE-2020-24557: Trend Micro Multiple Products Improper Access Control Vulnerability

criticalknown exploitedCVE-2020-24557
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, OfficeScan, and Worry-Free Business Security on Microsoft Windows contain an improper access control vulnerability that may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function, and attain privilege escalation.

CSIRTS triage

vendor: Trend Microproduct: Apex One, OfficeScan, Worry-Free Business SecurityPrivilege escalation
What
An improper access control vulnerability may allow privilege escalation.
Who is affected
Users of Trend Micro Apex One, OfficeScan, and Worry-Free Business Security on Windows are affected.
Urgency
Remediation is critical due to active exploitation and high severity.
Action
Install the latest patches from 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-2020-24557

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-2020-24557coverage & exploitation statusNVD · CVE.org

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