Falhas do tipo CWE-20

5.429 resultados

Validação inadequada de entrada

A aplicação recebe dados do usuário ou de fontes externas mas não valida (ou valida mal) se esses dados têm as propriedades necessárias para processamento seguro. Isso abre porta para injeção de código, buffer overflow, lógica corrompida e outros ataques que exploram dados malformados ou maliciosos.

Exemplo

Um formulário web aceita um CPF sem verificar se tem 11 dígitos numéricos, ou um app móvel recebe um ID de usuário em JSON sem confirmar se é um inteiro — atacantes exploram isso para acessar dados de outros usuários, executar queries SQL maliciosas ou causar erro de processamento.

Como mitigar

Implemente validação rigorosa na entrada: verifique tipo, comprimento, formato, intervalo de valores permitidos. Use whitelist (aceitar só o que você sabe ser seguro) em vez de blacklist. Valide tanto no cliente quanto no servidor, e use bibliotecas de parsing seguro para formatos complexos (XML, JSON).

CVE-2023-44192HIGHJunos OS: QFX5000 Series: DMA memory leak is observed when specific DHCP packets are transmitted over pseudo-VTEPEPSS 0.5%CVE-2024-36737HIGHImproper input validation in OneFlow-Inc. Oneflow v0.9.1 allows attackers to cause a Denial of Service (DoS) via inputting a negative value EPSS 0.5%CVE-2021-0173MEDIUMImproper Validation of Consistency within input in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some KEPSS 0.5%CVE-2024-36734HIGHImproper input validation in OneFlow-Inc. Oneflow v0.9.1 allows attackers to cause a Denial of Service (DoS) via inputting a negative value EPSS 0.5%CVE-2021-0174MEDIUMImproper Use of Validation Framework in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some Killer(TM) WEPSS 0.5%CVE-2023-44185HIGHJunos OS and Junos OS Evolved: In an BGP scenario RPD crashes upon receiving and processing a specific malformed ISO VPN BGP UPDATE packetEPSS 0.5%CVE-2024-22054HIGHA malformed discovery packet sent by a malicious actor with preexisting access to the network could interrupt the functionality of device maEPSS 0.5%CVE-2026-45678HIGHOpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloadsEPSS 0.5%CVE-2021-0175MEDIUMImproper Validation of Specified Index, Position, or Offset in Input in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operatiEPSS 0.5%CVE-2026-63335MEDIUMRabbitMQ Java client malformed body frame triggers raw command assembler exceptionEPSS 0.5%CVE-2024-36740HIGHAn issue in OneFlow-Inc. Oneflow v0.9.1 allows attackers to cause a Denial of Service (DoS) when index as a negative number exceeds the rangEPSS 0.5%CVE-2021-0165MEDIUMImproper input validation in firmware for Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and Killer(TM) Wi-Fi in Windows 10 anEPSS 0.5%CVE-2026-33287HIGHLiquidJS has Exponential Memory Amplification through its replace_first Filter $& PatternEPSS 0.5%CVE-2021-0172MEDIUMImproper input validation in firmware for some Intel(R) PROSet/Wireless Wi-Fi in multiple operating systems and some Killer(TM) Wi-Fi in WinEPSS 0.5%CVE-2021-0183MEDIUMImproper Validation of Specified Index, Position, or Offset in Input in software for some Intel(R) PROSet/Wireless Wi-Fi in multiple operatiEPSS 0.5%CVE-2024-20495HIGHA vulnerability in the Remote Access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTDEPSS 0.5%CVE-2025-20154HIGHCisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service VulnerabilityEPSS 0.5%CVE-2025-5680MEDIUMShenzhen Dashi Tongzhou Information Technology AgileBPM Groovy Script SysScriptController.java executeScript deserializationEPSS 0.5%CVE-2025-5679MEDIUMShenzhen Dashi Tongzhou Information Technology AgileBPM SysToolsController.java parseStrByFreeMarker deserializationEPSS 0.5%CVE-2022-39376LOWImproper input validation on emails links in GLPIEPSS 0.5%