Fallos del tipo CWE-20

5887 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

CVE-2025-29814CRITICALMicrosoft Partner Center Elevation of Privilege VulnerabilityEPSS 2.3%CVE-2018-0260—A vulnerability in the web interface of Cisco MATE Live could allow an unauthenticated, remote attacker to view and download the contents ofEPSS 2.3%CVE-2024-5990HIGHThinManager® ThinServer™ Improper Input Validation VulnerabilityEPSS 2.3%CVE-2021-37150MEDIUMProtocol vs scheme mismatchEPSS 2.3%CVE-2020-8349CRITICALAn internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Operating System (CNOSEPSS 2.2%CVE-2018-8869—In Lantech IDS 2102 2.0 and prior, nearly all input fields allow for arbitrary input on the device. A CVSS v3 base score of 9.8 has been calEPSS 2.2%CVE-2021-36032HIGHMagento Commerce Improper Input Validation Could Lead To Information Exposure and Privilege EscalationEPSS 2.2%CVE-2019-1843HIGHCisco RV110W, RV130W, and RV215W Routers Management Interface Denial of Service VulnerabilityEPSS 2.2%CVE-2020-15098HIGHMissing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMSEPSS 2.2%CVE-2018-0113—A vulnerability in an operations script of Cisco UCS Central could allow an authenticated, remote attacker to execute arbitrary shell commanEPSS 2.2%CVE-2023-20009MEDIUMA vulnerability in the Web UI and administrative CLI of the Cisco Secure Email Gateway (ESA) and Cisco Secure Email and Web Manager (SMA) coEPSS 2.2%CVE-2026-33116HIGH.NET, .NET Framework, and Visual Studio Denial of Service VulnerabilityEPSS 2.2%CVE-2024-3177LOWBypassing mountable secrets policy imposed by the ServiceAccount admission pluginEPSS 2.2%CVE-2023-35376MEDIUMMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.2%CVE-2023-35377MEDIUMMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.2%CVE-2023-32057CRITICALMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.2%CVE-2021-3482—A flaw was found in Exiv2 in versions before and including 0.27.4-RC1. Improper input validation of the rawData.size property in Jp2Image::rEPSS 2.2%CVE-2020-25721—Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to EPSS 2.2%CVE-2017-12264—A vulnerability in the Web Admin Interface of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a denial of servEPSS 2.2%CVE-2023-36697MEDIUMMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.2%