{"api_version":"1","generated_at":"2026-07-23T13:58:43+00:00","cve":"CVE-2020-24557","urls":{"html":"https://cve.report/CVE-2020-24557","api":"https://cve.report/api/cve/CVE-2020-24557.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-24557","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-24557"},"summary":{"title":"CVE-2020-24557","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.","state":"PUBLIC","assigner":"security@trendmicro.com","published_at":"2020-09-01 19:15:00","updated_at":"2022-07-12 17:42:00"},"problem_types":["NVD-CWE-Other"],"metrics":[],"references":[{"url":"https://success.trendmicro.com/solution/000263632","name":"https://success.trendmicro.com/solution/000263632","refsource":"MISC","tags":["Vendor Advisory"],"title":"SECURITY BULLETIN:  August 2020 Security Bulletin for Trend Micro Apex One and Apex One as a Service","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://success.trendmicro.com/solution/000267260","name":"https://success.trendmicro.com/solution/000267260","refsource":"MISC","tags":[],"title":"SECURITY BULLETIN: September 2020 Security Bulletin for Trend Micro Worry-Free Business Security and Worry-Free Business Security Services","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/","name":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/","refsource":"MISC","tags":["Third Party Advisory","VDB Entry"],"title":"ZDI-20-1094 | Zero Day Initiative","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-24557","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24557","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"24557","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trendmicro","cpe5":"apex_one","cpe6":"2019","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trendmicro","cpe5":"apex_one","cpe6":"saas","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trendmicro","cpe5":"apex_one","cpe6":"2019","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trendmicro","cpe5":"apex_one","cpe6":"saas","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"24557","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"trendmicro","cpe5":"worry-free_business_security","cpe6":"10.0","cpe7":"sp1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":{"cve_year":"2020","cve_id":"24557","cve":"CVE-2020-24557","vendorProject":"Trend Micro","product":"Apex One, OfficeScan, and Worry-Free Business Security","vulnerabilityName":"Trend Micro Multiple Products Improper Access Control Vulnerability","dateAdded":"2021-11-03","shortDescription":"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.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2020-24557","cwes":"","catalogVersion":"2026.07.22","updated_at":"2026-07-22 20:07:16"},"epss":{"cve_year":"2020","cve_id":"24557","cve":"CVE-2020-24557","epss":"0.026390000","percentile":"0.839710000","score_date":"2026-07-22","updated_at":"2026-07-23 00:09:34"},"legacy_qids":[{"cve":"CVE-2020-24557","qid":"375757","title":"Trend Micro Apex One(On-Prem) Multiple Vulnerabilities(000263632)(August 2020)"},{"cve":"CVE-2020-24557","qid":"375758","title":"Trend Micro OfficeScan XG Hard Link Privilege Escalation Vulnerability(000263632)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security@trendmicro.com","ID":"CVE-2020-24557","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Trend Micro Apex One","version":{"version_data":[{"version_value":"2009 (on premise), SaaS"}]}},{"product_name":"Trend Micro Worry-Free Business Security ","version":{"version_data":[{"version_value":"10.0 SP1"}]}}]},"vendor_name":"Trend Micro"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Access Control Privilege Escalation"}]}]},"references":{"reference_data":[{"url":"https://success.trendmicro.com/solution/000263632","refsource":"MISC","name":"https://success.trendmicro.com/solution/000263632"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/","refsource":"MISC","name":"https://www.zerodayinitiative.com/advisories/ZDI-20-1094/"},{"url":"https://success.trendmicro.com/solution/000267260","refsource":"MISC","name":"https://success.trendmicro.com/solution/000267260"}]}},"nvd":{"publishedDate":"2020-09-01 19:15:00","lastModifiedDate":"2022-07-12 17:42:00","problem_types":["NVD-CWE-Other"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE","baseScore":7.2},"severity":"HIGH","exploitabilityScore":3.9,"impactScore":10,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:trendmicro:apex_one:saas:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"24557","Ordinal":"185967","Title":"CVE-2020-24557","CVE":"CVE-2020-24557","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"24557","Ordinal":"1","NoteData":"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.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"24557","Ordinal":"2","NoteData":"2020-09-01","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"24557","Ordinal":"3","NoteData":"2021-04-22","Type":"Other","Title":"Modified"}]}}}