Falhas do tipo CWE-20

5.393 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-2020-3363HIGHCisco Small Business Smart and Managed Switches Denial of Service VulnerabilityEPSS 1.8%CVE-2024-43611HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2021-3673—A vulnerability was found in Radare2 in version 5.3.1. Improper input validation when reading a crafted LE binary can lead to resource exhauEPSS 1.8%CVE-2020-3397HIGHCisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service VulnerabilityEPSS 1.8%CVE-2018-0355—A vulnerability in the web UI of Cisco Unified Communications Manager (Unified CM) could allow an unauthenticated, remote attacker to conducEPSS 1.8%CVE-2025-34056CRITICALAVTECH IP camera, DVR, and NVR Devices Authenticated Root Command ExecutionEPSS 1.8%CVE-2020-3425HIGHCisco IOS XE Software Privilege Escalation VulnerabilitiesEPSS 1.8%CVE-2018-14631HIGHmoodle before versions 3.5.2, 3.4.5, 3.3.8 is vulnerable to a boost theme - blog search GET parameter insufficiently filtered. The breadcrumEPSS 1.8%CVE-2020-3228MEDIUMCisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Service VulnerabilityEPSS 1.8%CVE-2019-1785CRITICALClam AntiVirus RAR Directory Traversal VulnerabilityEPSS 1.8%CVE-2021-44356HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44357HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44366HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44394HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44354HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44355HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44375HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-1506CRITICALCisco SD-WAN vManage Software VulnerabilitiesEPSS 1.8%CVE-2020-3521MEDIUMCisco Data Center Network Manager Read File Path Traversal VulnerabilityEPSS 1.8%CVE-2021-36038MEDIUMMagento Commerce Multishipping Module Improper Input Validation Could Lead To Information ExposureEPSS 1.8%