{"id":"CVE-2020-24557","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-24557","generatedAt":"2026-10-31T16:14:59.788Z","title":"Trend Micro Multiple Products Improper Access Control Vulnerability","description":"A vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 on Microsoft Windows may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function and attain privilege escalation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.","published":"2020-09-01T19:15:12.000Z","lastModified":"2026-06-17T03:05:45.000Z","status":"Analyzed","sourceIdentifier":"security@trendmicro.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["trendmicro/apex one","trendmicro/worry-free business security"],"epss":{"score":0.02666,"percentile":0.85711,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-24557"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://success.trendmicro.com/solution/000263632","tags":["Vendor Advisory"],"source":"security@trendmicro.com"},{"url":"https://success.trendmicro.com/solution/000267260","tags":["Vendor Advisory"],"source":"security@trendmicro.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/","tags":["Third Party Advisory","VDB Entry"],"source":"security@trendmicro.com"},{"url":"https://success.trendmicro.com/solution/000263632","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://success.trendmicro.com/solution/000267260","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-24557","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-24557","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}