Falhas do tipo CWE-284

7.967 resultados

Controle de acesso inadequado a recursos

A aplicação falha em validar ou aplica incorretamente as restrições de acesso, permitindo que usuários não autorizados acessem dados ou funcionalidades que deveriam estar protegidas. É uma das fragilidades mais comuns em segurança: o código não verifica corretamente quem está pedindo acesso e simplesmente concede.

Exemplo

Um e-commerce que permite acessar o perfil de qualquer cliente substituindo o ID na URL (ex: /usuario/123 → /usuario/124), sem validar se o usuário autenticado é o dono daquele perfil. Um atacante consegue ver dados pessoais, histórico de compras e endereços de outras pessoas.

Como mitigar

Implemente verificações explícitas em cada acesso a recurso: autentique o usuário, identifique qual recurso ele quer acessar, e valide se as permissões dele cobrem aquele recurso específico. Use listas de controle de acesso (ACLs) ou papéis (RBAC/ABAC) consistentemente em toda a API ou aplicação, nunca deixando a segurança implícita.

CVE-2021-41298HIGHECOA BAS controller - Improper Access ControlEPSS 0.9%CVE-2026-104335HIGHLangflow OSS is affected by multiple vulnerabilitiesEPSS 0.9%CVE-2025-46629MEDIUMLack of access controls in the 'ate' management binary of the Tenda RX2 Pro 16.03.30.14 allows an unauthenticated remote attacker to performEPSS 0.9%CVE-2022-33925MEDIUMDell Wyse Management Suite 3.6.1 and below contains an Improper Access control vulnerability in UI. An remote authenticated attacker could pEPSS 0.9%CVE-2021-40416HIGHAn incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink RLC-410W v3.0.0.136_201EPSS 0.9%CVE-2022-3030MEDIUMAn improper access control issue in GitLab CE/EE affecting all versions starting before 15.1.6, all versions from 15.2 before 15.2.4, all veEPSS 0.9%CVE-2023-3431MEDIUMImproper Access Control in plantuml/plantumlEPSS 0.9%CVE-2023-43336—Sangoma Technologies FreePBX before cdr 15.0.18, 16.0.40, 15.0.16, and 16.0.17 was discovered to contain an access control issue via a modifEPSS 0.9%CVE-2022-1659MEDIUMJupiterX Core <= 2.0.6 - Information Disclosure, Modification, and Denial of ServiceEPSS 0.9%CVE-2026-58630CRITICALAzure App Service on Azure Stack Hub Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2025-0650HIGHOvn: egress acls may be bypassed via specially crafted udp packetEPSS 0.9%CVE-2019-10187MEDIUMA flaw was found in moodle before versions 3.7.1, 3.6.5, 3.5.7. Users with permission to delete entries from a glossary were able to delete EPSS 0.9%CVE-2019-10188MEDIUMA flaw was found in moodle before versions 3.7.1, 3.6.5, 3.5.7. Teachers in a quiz group could modify group overrides for other groups in thEPSS 0.9%CVE-2019-10189MEDIUMA flaw was found in moodle before versions 3.7.1, 3.6.5, 3.5.7. Teachers in an assignment group could modify group overrides for other groupEPSS 0.9%CVE-2020-3126LOWCisco Webex Meetings Multimedia Viewer VulnerabilityEPSS 0.9%CVE-2023-24468—Broken access control in Advanced Authentication versions prior to 6.4.1.1 and 6.3.7.2EPSS 0.9%CVE-2026-1933HIGHSamba: missing access check on reparse point operationsEPSS 0.9%CVE-2026-66309CRITICALAzure SQL Database Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2022-3382HIGHHIWIN Robot System Software version 3.3.21.9869 does not properly address the terminated command source. As a result, an attacker could crafEPSS 0.9%CVE-2024-45208CRITICALThe Versa Director SD-WAN orchestration platform which makes use of Cisco NCS application service. Active and Standby Directors communicate EPSS 0.9%