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-2016-8629—Red Hat Keycloak before version 2.4.0 did not correctly check permissions when handling service account user deletion requests sent to the rEPSS 1.9%CVE-2024-21424MEDIUMAzure Compute Gallery Elevation of Privilege VulnerabilityEPSS 1.9%CVE-2020-5396—JMX Insecure Default Configuration in GemFireEPSS 1.9%CVE-2021-36909HIGHWordPress WP Reset PRO Premium plugin <= 5.98 - Authenticated Database Reset vulnerabilityEPSS 1.9%CVE-2018-15398—Cisco Adaptive Security Appliance Access Control List Bypass VulnerabilityEPSS 1.9%CVE-2018-7791CRITICALA Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versionEPSS 1.9%CVE-2023-36890MEDIUMMicrosoft SharePoint Server Information Disclosure VulnerabilityEPSS 1.9%CVE-2020-25654—An ACL bypass flaw was found in pacemaker. An attacker having a local account on the cluster and in the haclient group could use IPC communiEPSS 1.9%CVE-2020-8153—Improper access control in Groupfolders app 4.0.3 allowed to delete hidden directories when when renaming an accessible item to the same namEPSS 1.9%CVE-2019-15068—A broken access control vulnerability discovered in Smart Battery A4EPSS 1.9%CVE-2018-15610HIGHImproper access controls in IP Office one-X PortalEPSS 1.8%CVE-2021-32656HIGHTrusted servers exchange can be triggered by attackerEPSS 1.8%CVE-2026-41641HIGHNocoBase Vulnerable to SQL Validation Bypass via `sqlCollection:update` Missing `checkSQL` CallEPSS 1.8%CVE-2023-24479CRITICALAn authentication bypass vulnerability exists in the httpd nvram.cgi functionality of Yifan YF325 v1.0_20221108. A specially crafted networkEPSS 1.8%CVE-2019-25060—WP-GraphQL < 0.3.5 - Improper Access ControlEPSS 1.8%CVE-2026-17540HIGHBit File Manager < 6.9.1 - Subscriber+ Arbitrary File Read and Deletion via Connector Command Request-Source MismatchEPSS 1.8%CVE-2018-4858—A vulnerability has been identified in IEC 61850 system configurator (All versions < V5.80), DIGSI 5 (affected as IEC 61850 system configuraEPSS 1.8%CVE-2025-4751MEDIUMD-Link DI-7003GV2 index.data information disclosureEPSS 1.8%CVE-2025-33056HIGHWindows Local Security Authority (LSA) Denial of Service VulnerabilityEPSS 1.8%CVE-2021-21045HIGHAcrobat Reader DC Improper Installer Access Control Vulnerability Could Lead To Privilege EscalationEPSS 1.8%