CVE-2020-24557
Actively exploited. CVE-2020-24557 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, 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
- 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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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 84% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2020-24557: Trend Micro Multiple Products Improper Access Control Vulnerabilitycisa-kev · 2021-11-03
External references
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