Falhas do tipo CWE-20

5.847 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-2026-33116HIGH.NET, .NET Framework, and Visual Studio Denial of Service VulnerabilityEPSS 2.1%CVE-2022-31778—Transfer-Encoding not treated as hop-by-hopEPSS 2.1%CVE-2020-28221—A CWE-20: Improper Input Validation vulnerability exists in EcoStruxure™ Operator Terminal Expert and Pro-face BLUE (version details in the EPSS 2.1%CVE-2019-1760MEDIUMCisco IOS XE Software Performance Routing Version 3 Denial of Service VulnerabilityEPSS 2.1%CVE-2022-31121HIGHImproper Input Validation in fabric hyperledgerEPSS 2.1%CVE-2017-12217—A vulnerability in the General Packet Radio Service (GPRS) Tunneling Protocol ingress packet handler of Cisco ASR 5500 System Architecture EEPSS 2.1%CVE-2017-12328—A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remEPSS 2.1%CVE-2019-18995MEDIUMABB PB610 HMISimulator does not check content-length of the HTTP requestEPSS 2.1%CVE-2021-28170—In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be EPSS 2.1%CVE-2021-1404HIGHClam AntiVirus (ClamAV) Email Parser Denial of Service VulnerabilityEPSS 2.1%CVE-2025-21350MEDIUMWindows Kerberos Denial of Service VulnerabilityEPSS 2.1%CVE-2018-15416—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15414—Cisco Webex Network Recording Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15413—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15415—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15408—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15412—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15420—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15417—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2024-6089HIGHRockwell Automation Major nonrecoverable fault in 5015 – AENFTXTEPSS 2.1%