Falhas do tipo CWE-20

5.404 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-2021-44371HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44365HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44368HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44360HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44379HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44361HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44373HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2021-44358HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.1%CVE-2022-3171MEDIUMMemory handling vulnerability in ProtocolBuffers Java core and liteEPSS 1.1%CVE-2022-20750MEDIUMCisco Redundancy Configuration Manager for Cisco StarOS Software TCP Denial of Service VulnerabilityEPSS 1.1%CVE-2025-12945LOWImproper input validation in NETGEAR Nighthawk router R7000PEPSS 1.1%CVE-2026-20812MEDIUMLDAP Tampering VulnerabilityEPSS 1.1%CVE-2022-36784CRITICALElsight – Elsight Halo Remote Code Execution (RCE)EPSS 1.1%CVE-2024-8073CRITICALCommand Injection Vulnerability in Hillstone Networks Web Application FirewallEPSS 1.1%CVE-2022-31766HIGHA vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V7.1.2), RUGGEDCOM RM1224 LTE(4G) NAEPSS 1.1%CVE-2020-7848HIGHThe EFM ipTIME C200 IP Camera is affected by a Command Injection vulnerability in /login.cgi?logout=1 script. To exploit this vulnerability,EPSS 1.1%CVE-2023-2727MEDIUMBypassing policies imposed by the ImagePolicyWebhook admission pluginEPSS 1.1%CVE-2026-20856HIGHWindows Server Update Service (WSUS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-34129HIGHLILIN DVR RCE via Malicious FTP/NTP ConfigurationEPSS 1.1%CVE-2019-15613—A bug in Nextcloud Server 17.0.1 causes the workflow rules to depend their behaviour on the file extension when checking file mimetypes.EPSS 1.1%