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-2018-19005—Cscape, Version 9.80.75.3 SP3 and prior. An improper input validation vulnerability has been identified that may be exploited by processing EPSS 1.7%CVE-2023-30535HIGHSnowflake JDBC vulnerable to command injection via SSO URL authenticationEPSS 1.7%CVE-2024-49057HIGHMicrosoft Defender for Endpoint on Android Spoofing VulnerabilityEPSS 1.7%CVE-2019-1720MEDIUMCisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service VulnerabilityEPSS 1.7%CVE-2020-27833—A Zip Slip vulnerability was found in the oc binary in openshift-clients where an arbitrary file write is achieved by using a specially crafEPSS 1.7%CVE-2022-4886HIGHIngress-nginx `path` sanitization can be bypassed with `log_format` directiveEPSS 1.7%CVE-2024-43455HIGHWindows Remote Desktop Licensing Service Spoofing VulnerabilityEPSS 1.7%CVE-2020-7880HIGHdouzone NeoRS remote support program ActiveX vulnerabilityEPSS 1.7%CVE-2021-1431HIGHCisco IOS XE SD-WAN Software vDaemon Denial of Service VulnerabilityEPSS 1.7%CVE-2023-27604HIGHApache Airflow Sqoop Provider: Airflow Sqoop Provider RCE VulnerabilityEPSS 1.7%CVE-2024-43592HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-43593HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2017-2617HIGHhawtio before version 1.5.5 is vulnerable to remote code execution via file upload. An attacker could use this vulnerability to upload a craEPSS 1.7%CVE-2020-8124—Insufficient validation and sanitization of user input exists in url-parse npm package version 1.4.4 and earlier may allow attacker to bypasEPSS 1.7%CVE-2026-34980MEDIUMOpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the networkEPSS 1.7%CVE-2019-1831MEDIUMCisco Email Security Appliance Content Filter Bypass VulnerabilityEPSS 1.6%CVE-2019-1963HIGHCisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service VulnerabilityEPSS 1.6%CVE-2025-34099CRITICALVICIdial vicidial_sales_viewer.php Unauthenticated Command Injection via Basic Auth PasswordEPSS 1.6%CVE-2022-24423MEDIUMDell iDRAC8 versions prior to 2.83.83.83 contain a denial of service vulnerability. A remote unauthenticated attacker could potentially explEPSS 1.6%CVE-2025-43559CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.6%