GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-36741 (GCVE-0-2021-36741)

Vulnerability from cvelistv5 – Published: 2021-07-29 19:23 – Updated: 2025-10-21 23:25
VLAI CISA Previdian
Summary
An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 19:40 UTC
CWE
  • Arbitrary File Upload
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6d5c31ba-4a2f-43de-85e7-17de9d232470

Vulnerability ID: CVE-2021-36741

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Trend Micro Multiple Products Improper Input Validation Vulnerability | Affected: Trend Micro / Apex One, Apex One as a Service, and Worry-Free Business Security | Description: Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows a remote attacker to upload files. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://success.trendmicro.com/dcx/s/solution/000287819?language=en_US, https://success.trendmicro.com/dcx/s/solution/000287820?language=en_US; https://nvd.nist.gov/vuln/detail/CVE-2021-36741
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-22
Feed CISA Known Exploited Vulnerabilities Catalog
Product Apex One, Apex One as a Service, and Worry-Free Business Security
Due Date 2021-11-17
Date Added 2021-11-03
Vendorproject Trend Micro
Vulnerabilityname Trend Micro Multiple Products Improper Input Validation Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:29 UTC | Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 60d24ecc-99d8-42a9-be27-fae46d11bd6a

Vulnerability ID: CVE-2021-36741

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEVIntel entry: An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1... | Affected: Trend Micro / Trend Micro Apex One, Trend Micro OfficeScan, Trend Micro Worry-Free Business Security | CVSS: 8.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1...
Vendor Trend Micro
Product Trend Micro Apex One, Trend Micro OfficeScan, Trend Micro Worry-Free Business Security
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 8.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:01:59.373Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://success.trendmicro.com/solution/000287819"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://success.trendmicro.com/solution/000287820"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://success.trendmicro.com/jp/solution/000287796"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://success.trendmicro.com/jp/solution/000287815"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-36741",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-06T19:40:34.627421Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-434",
                "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:25:39.752Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00.000Z",
            "value": "CVE-2021-36741 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Trend Micro Apex One",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "2019, SaaS"
            }
          ]
        },
        {
          "product": "Trend Micro OfficeScan",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "XG SP1"
            }
          ]
        },
        {
          "product": "Trend Micro Worry-Free Business Security",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "10.0 SP1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\ufffds management console in order to exploit this vulnerability."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Arbitrary File Upload",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-07-29T19:23:13.000Z",
        "orgId": "7f7bd7df-cffe-4fdb-ab6d-859363b89272",
        "shortName": "trendmicro"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://success.trendmicro.com/solution/000287819"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://success.trendmicro.com/solution/000287820"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://success.trendmicro.com/jp/solution/000287796"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://success.trendmicro.com/jp/solution/000287815"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@trendmicro.com",
          "ID": "CVE-2021-36741",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Trend Micro Apex One",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "2019, SaaS"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Trend Micro OfficeScan",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "XG SP1"
                          }
                        ]
                      }
                    },
                    {
                      "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": "An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\ufffds management console in order to exploit this vulnerability."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Arbitrary File Upload"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://success.trendmicro.com/solution/000287819",
              "refsource": "MISC",
              "url": "https://success.trendmicro.com/solution/000287819"
            },
            {
              "name": "https://success.trendmicro.com/solution/000287820",
              "refsource": "MISC",
              "url": "https://success.trendmicro.com/solution/000287820"
            },
            {
              "name": "https://success.trendmicro.com/jp/solution/000287796",
              "refsource": "MISC",
              "url": "https://success.trendmicro.com/jp/solution/000287796"
            },
            {
              "name": "https://success.trendmicro.com/jp/solution/000287815",
              "refsource": "MISC",
              "url": "https://success.trendmicro.com/jp/solution/000287815"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7f7bd7df-cffe-4fdb-ab6d-859363b89272",
    "assignerShortName": "trendmicro",
    "cveId": "CVE-2021-36741",
    "datePublished": "2021-07-29T19:23:13.000Z",
    "dateReserved": "2021-07-14T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:25:39.752Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2021-36741",
      "cwes": "[\"CWE-22\"]",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-11-17",
      "forensicTriage": "No",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://success.trendmicro.com/dcx/s/solution/000287819?language=en_US, https://success.trendmicro.com/dcx/s/solution/000287820?language=en_US; https://nvd.nist.gov/vuln/detail/CVE-2021-36741",
      "product": "Apex One, Apex One as a Service, and Worry-Free Business Security",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows a remote attacker to upload files.",
      "vendorProject": "Trend Micro",
      "vulnerabilityName": "Trend Micro Multiple Products Improper Input Validation Vulnerability"
    },
    "epss": {
      "cve": "CVE-2021-36741",
      "date": "2026-09-16",
      "epss": "0.04951",
      "percentile": "0.91724"
    },
    "fkie_nvd": {
      "cisaActionDue": "2021-11-17",
      "cisaExploitAdd": "2021-11-03",
      "cisaRequiredAction": "Apply updates per vendor instructions.",
      "cisaVulnerabilityName": "Trend Micro Multiple Products Improper Input Validation Vulnerability",
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*\", \"matchCriteriaId\": \"64600B42-4884-41F2-A683-AE1EDB79372E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:trendmicro:officescan_business_security:10.0:sp1:*:*:*:*:*:*\", \"matchCriteriaId\": \"762313F8-2BA6-4ED7-A977-56C962D5B27F\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"AF019D2D-C426-4D2D-A254-442CE777B41E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FFCE8717-85D2-4F4F-91DF-C6DA341C4E19\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\\ufffds management console in order to exploit this vulnerability.\"}, {\"lang\": \"es\", \"value\": \" Una vulnerabilidad de validaci\\u00f3n de entrada incorrecta en Trend Micro Apex One, Apex One as a Service, OfficeScan XG y Worry-Free Business Security 10.0 SP1 permite que un control remoto conectado cargue archivos arbitrarios en las instalaciones afectadas. Tenga en cuenta: un atacante primero debe obtener la capacidad de iniciar sesi\\u00f3n en la consola de administraci\\u00f3n del producto para poder aprovechar esta vulnerabilidad.\"}]",
      "id": "CVE-2021-36741",
      "lastModified": "2024-11-21T06:13:59.820",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:S/C:P/I:P/A:P\", \"baseScore\": 6.5, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"SINGLE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.0, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-07-29T20:15:07.620",
      "references": "[{\"url\": \"https://success.trendmicro.com/jp/solution/000287796\", \"source\": \"security@trendmicro.com\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287815\", \"source\": \"security@trendmicro.com\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287819\", \"source\": \"security@trendmicro.com\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287820\", \"source\": \"security@trendmicro.com\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287796\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287815\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287819\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287820\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Broken Link\", \"Vendor Advisory\"]}]",
      "sourceIdentifier": "security@trendmicro.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-434\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-36741\",\"sourceIdentifier\":\"security@trendmicro.com\",\"published\":\"2021-07-29T20:15:07.620\",\"lastModified\":\"2025-10-31T17:14:20.187\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\ufffds management console in order to exploit this vulnerability.\"},{\"lang\":\"es\",\"value\":\" Una vulnerabilidad de validaci\u00f3n de entrada incorrecta en Trend Micro Apex One, Apex One as a Service, OfficeScan XG y Worry-Free Business Security 10.0 SP1 permite que un control remoto conectado cargue archivos arbitrarios en las instalaciones afectadas. Tenga en cuenta: un atacante primero debe obtener la capacidad de iniciar sesi\u00f3n en la consola de administraci\u00f3n del producto para poder aprovechar esta vulnerabilidad.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:P/A:P\",\"baseScore\":6.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Trend Micro Multiple Products Improper Input Validation Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-434\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-434\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*\",\"matchCriteriaId\":\"64600B42-4884-41F2-A683-AE1EDB79372E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:trendmicro:officescan_business_security:10.0:sp1:*:*:*:*:*:*\",\"matchCriteriaId\":\"762313F8-2BA6-4ED7-A977-56C962D5B27F\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AF019D2D-C426-4D2D-A254-442CE777B41E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FFCE8717-85D2-4F4F-91DF-C6DA341C4E19\"}]}]}],\"references\":[{\"url\":\"https://success.trendmicro.com/jp/solution/000287796\",\"source\":\"security@trendmicro.com\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/jp/solution/000287815\",\"source\":\"security@trendmicro.com\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/solution/000287819\",\"source\":\"security@trendmicro.com\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/solution/000287820\",\"source\":\"security@trendmicro.com\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/jp/solution/000287796\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/jp/solution/000287815\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/solution/000287819\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://success.trendmicro.com/solution/000287820\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Broken Link\",\"Vendor Advisory\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"US Government Resource\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T13:48:28+00:00",
      "cve": "CVE-2021-36741",
      "id": "CVE-2021-36741",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-36741",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-36741.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://success.trendmicro.com/solution/000287819\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287820\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287796\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287815\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T01:01:59.373Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-36741\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-06T19:40:34.627421Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741\"}}}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00.000Z\", \"value\": \"CVE-2021-36741 added to CISA KEV\"}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-434\", \"description\": \"CWE-434 Unrestricted Upload of File with Dangerous Type\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-06T19:40:22.422Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"Trend Micro\", \"product\": \"Trend Micro Apex One\", \"versions\": [{\"status\": \"affected\", \"version\": \"2019, SaaS\"}]}, {\"vendor\": \"Trend Micro\", \"product\": \"Trend Micro OfficeScan\", \"versions\": [{\"status\": \"affected\", \"version\": \"XG SP1\"}]}, {\"vendor\": \"Trend Micro\", \"product\": \"Trend Micro Worry-Free Business Security\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.0 SP1\"}]}], \"references\": [{\"url\": \"https://success.trendmicro.com/solution/000287819\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://success.trendmicro.com/solution/000287820\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287796\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287815\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\\ufffds management console in order to exploit this vulnerability.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"Arbitrary File Upload\"}]}], \"providerMetadata\": {\"orgId\": \"7f7bd7df-cffe-4fdb-ab6d-859363b89272\", \"shortName\": \"trendmicro\", \"dateUpdated\": \"2021-07-29T19:23:13.000Z\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"2019, SaaS\"}]}, \"product_name\": \"Trend Micro Apex One\"}, {\"version\": {\"version_data\": [{\"version_value\": \"XG SP1\"}]}, \"product_name\": \"Trend Micro OfficeScan\"}, {\"version\": {\"version_data\": [{\"version_value\": \"10.0 SP1\"}]}, \"product_name\": \"Trend Micro Worry-Free Business Security\"}]}, \"vendor_name\": \"Trend Micro\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://success.trendmicro.com/solution/000287819\", \"name\": \"https://success.trendmicro.com/solution/000287819\", \"refsource\": \"MISC\"}, {\"url\": \"https://success.trendmicro.com/solution/000287820\", \"name\": \"https://success.trendmicro.com/solution/000287820\", \"refsource\": \"MISC\"}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287796\", \"name\": \"https://success.trendmicro.com/jp/solution/000287796\", \"refsource\": \"MISC\"}, {\"url\": \"https://success.trendmicro.com/jp/solution/000287815\", \"name\": \"https://success.trendmicro.com/jp/solution/000287815\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product\\ufffds management console in order to exploit this vulnerability.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Arbitrary File Upload\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-36741\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"security@trendmicro.com\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-36741\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-21T23:25:39.752Z\", \"dateReserved\": \"2021-07-14T00:00:00.000Z\", \"assignerOrgId\": \"7f7bd7df-cffe-4fdb-ab6d-859363b89272\", \"datePublished\": \"2021-07-29T19:23:13.000Z\", \"assignerShortName\": \"trendmicro\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.