CVE-2020-24557: Trend Micro Multiple Products Improper Access Control Vulnerability
CVE-2020-24557 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03
Trend Micro Apex One, OfficeScan, and Worry-Free Business Security on Windows contain an improper access control vulnerability. A local attacker with low-privileged code execution can manipulate specific product folders to disable security features and abuse Windows functions to achieve privilege escalation.
Yes. CVE-2020-24557 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-24557?
Critical severity, with a CVSS score of 7.8, published 3 November 2021.
Which products and versions are affected?
Trend Micro Apex One 2019, SaaS; Trend Micro Worry-Free Business Security 10.0 SP1; Trend Micro OfficeScan.
Is there a fix for CVE-2020-24557?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-24557 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2020-24557?
Check whether you run Trend Micro Officescan. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Trend Micro Apex One 2019, SaaS
Trend Micro Worry-Free Business Security 10.0 SP1
Trend Micro OfficeScan
Timeline
2020-09-08: disclosed: Initial NVD analysis date
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2021-11-03: exploited: Confirmed exploited in the wild per CISA KEV catalog entry date