Falhas do tipo CWE-494

210 resultados

Elevação de privilégio

A aplicação não valida corretamente permissões ou contexto de segurança, permitindo que um usuário com privilégios baixos execute ações reservadas a administradores ou usuários com acesso mais elevado. É perigoso porque quebra o modelo de controle de acesso e expõe funcionalidades críticas.

Exemplo

Um usuário comum consegue acessar a API de administração porque o servidor valida apenas a presença de um token válido, ignorando o campo de 'role' contido nele; ou um programa SUID não revoga permissões root antes de executar código fornecido pelo usuário, permitindo leitura de arquivos sensíveis.

Como mitigar

Implemente verificação rigorosa de permissões em toda ação sensível (autorização não apenas autenticação), use listas de controle de acesso (ACL) explícitas, aplique princípio do menor privilégio e audite chamadas privilegiadas. Teste com usuários em papéis baixos para confirmar bloqueios.

CVE-2020-22654CRITICALIn Ruckus R310 10.5.1.0.199, Ruckus R500 10.5.1.0.199, Ruckus R600 10.5.1.0.199, Ruckus T300 10.5.1.0.199, Ruckus T301n 10.5.1.0.199, RuckusEPSS 0.4%CVE-2025-57431HIGHThe Sound4 PULSE-ECO AES67 1.22 web-based management interface is vulnerable to Remote Code Execution (RCE) via a malicious firmware update EPSS 0.3%CVE-2026-82021CRITICALHermes Agent 0.18.2 < 0.19.0 MCP Catalog Supply Chain RCE via Mutable Branch ReferenceEPSS 0.3%CVE-2023-27025HIGHAn arbitrary file download vulnerability in the background management module of RuoYi v4.7.6 and below allows attackers to download arbitrarEPSS 0.3%CVE-2023-46143HIGHPhoenix Contact: Classic line industrial controllers prone to inadequate integrity check of PLCEPSS 0.3%CVE-2023-5592HIGHPhoenix Contact: ProConOs prone to Download of Code Without Integrity CheckEPSS 0.3%CVE-2026-28500HIGHONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain AttackEPSS 0.3%CVE-2025-63434HIGHThe update mechanism in Xtooltech Xtool AnyScan Android Application 4.40.40 and prior is insecure. The application downloads and extracts upEPSS 0.3%CVE-2026-59286HIGHSpring for GraphQL loads Untrusted Resources in GraphiQL supportEPSS 0.3%CVE-2022-38199MEDIUMBUG-000144172 - Remote file download issue in ArcGIS ServerEPSS 0.3%CVE-2022-4261MEDIUMRapid7 Nexpose Update Validation IssueEPSS 0.3%CVE-2023-45799HIGHMLSoft TCO!stream Remote Code Execution VulnerabilityEPSS 0.3%CVE-2023-37220HIGHSynel Terminals - CWE-494: Download of Code Without Integrity CheckEPSS 0.3%CVE-2026-65097HIGHNVIDIA NemoClaw for Linux contains a vulnerability in its installation scripts, where an attacker could cause a download of code without intEPSS 0.3%CVE-2026-9089HIGHThe ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operatioEPSS 0.3%CVE-2026-33075CRITICALFastGPT has Arbitrary Code Execution in GitHub Actions via pull_request_target in fastgpt-preview-image.ymlEPSS 0.3%CVE-2023-46144MEDIUMPHOENIX CONTACT: PLCnext Control prone to download of code without integrity checkEPSS 0.3%CVE-2024-30206HIGHA vulnerability has been identified in SIMATIC RTLS Locating Manager (6GT2780-0DA00) (All versions < V3.0.1.1), SIMATIC RTLS Locating ManageEPSS 0.3%CVE-2023-5984HIGH A CWE-494 Download of Code Without Integrity Check vulnerability exists that could allow modified firmware to be uploaded when an authorizeEPSS 0.3%CVE-2025-7620HIGHDSIC｜Cross-browser Components for Official Document Creation - Remote Code ExecutionEPSS 0.3%