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-2020-3245MEDIUMCisco Smart Software Manager On-Prem Improper Access Control VulnerabilityEPSS 1.2%CVE-2023-40039—An issue was discovered on ARRIS TG852G, TG862G, and TG1672G devices. A remote attacker (in proximity to a Wi-Fi network) can derive the defEPSS 1.2%CVE-2022-21706HIGHMulti-use invitations can grant access to other organizations in ZulipEPSS 1.2%CVE-2021-32514HIGHQSAN Storage Manager - Improper Access Control Following via FirwareUpgrade functionEPSS 1.2%CVE-2021-35245HIGHBroken Access Control Vulnerability for SolarWinds Serv-UEPSS 1.2%CVE-2025-44654CRITICALIn Linksys E2500 3.0.04.002, the chroot_local_user option is enabled in the vsftpd configuration file. This could lead to unauthorized accesEPSS 1.2%CVE-2023-37478HIGHpnpm incorrectly parses tar archives relative to specificationEPSS 1.2%CVE-2022-27178CRITICALA denial of service vulnerability exists in the confctl_set_wan_cfg functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. A specially-crEPSS 1.2%CVE-2021-4361HIGHJobSearch WP Job Board <= 1.8.1 - Missing Authorization to Arbitrary Options UpdateEPSS 1.2%CVE-2022-2631CRITICALImproper Access Control in tooljet/tooljetEPSS 1.2%CVE-2025-24994HIGHMicrosoft Windows Cross Device Service Elevation of Privilege VulnerabilityEPSS 1.2%CVE-2017-9285MEDIUMLogin restrictions not applied when using ebaclient against NetIQ eDirectory EBA interfaceEPSS 1.2%CVE-2023-22339HIGHImproper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypassEPSS 1.2%CVE-2021-27444CRITICALWeintek EasyWeb cMT Improper Access ControlEPSS 1.2%CVE-2020-25662MEDIUMA Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth stack implementation handled the initializaEPSS 1.2%CVE-2018-17559HIGHDue to incorrect access control, unauthenticated remote attackers can view the /video.mjpg video stream of certain ABUS TVIP cameras.EPSS 1.2%CVE-2020-36700HIGHPage Builder: KingComposer < 2.9.4 - Authorization Bypass due to Improper Access ControlEPSS 1.2%CVE-2019-6544—GE Communicator, all versions prior to 4.0.517, has a service running with system privileges that may allow an unprivileged user to perform EPSS 1.2%CVE-2026-42569CRITICALphpvms: /importer authorization bypass causing full database wipeEPSS 1.2%CVE-2024-21376CRITICALMicrosoft Azure Kubernetes Service Confidential Container Remote Code Execution VulnerabilityEPSS 1.2%