Falhas do tipo CWE-20

5.418 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-2020-3502MEDIUMCisco Webex Meetings Desktop App Information Disclosure VulnerabilitiesEPSS 1.0%CVE-2025-59248HIGHMicrosoft Exchange Server Spoofing VulnerabilityEPSS 1.0%CVE-2025-8769CRITICALMegaSys Computer Technologies Telenium Online Web Application Improper Input ValidationEPSS 1.0%CVE-2020-3501MEDIUMCisco Webex Meetings Desktop App Information Disclosure VulnerabilitiesEPSS 1.0%CVE-2025-43234CRITICALMultiple memory corruption issues were addressed with improved input validation. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS SequEPSS 1.0%CVE-2022-45060HIGHAn HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before 7.1.2, and 7.2.x before 7.2.1. An attackEPSS 1.0%CVE-2021-23278HIGHArbitrary File deleteEPSS 1.0%CVE-2018-0214—A vulnerability in certain CLI commands of Cisco Identity Services Engine (ISE) could allow an authenticated, local attacker to execute arbiEPSS 1.0%CVE-2023-2315HIGHPath Traversal in OpenCart versions 4.0.0.0 to 4.0.2.2EPSS 1.0%CVE-2025-43430MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, EPSS 1.0%CVE-2021-35254HIGHAuthenticated Remote Code Execution in WebHelpDesk 12.7.8EPSS 1.0%CVE-2023-29293LOWAdobe Commerce | Improper Input Validation (CWE-20)EPSS 1.0%CVE-2021-43448MEDIUMONLYOFFICE all versions as of 2021-11-08 is vulnerable to Improper Input Validation. A lack of input validation can allow an attacker to spoEPSS 1.0%CVE-2020-3244MEDIUMCisco ASR 5000 Series Aggregation Services Routers Enhanced Charging Service Rule Bypass VulnerabilityEPSS 1.0%CVE-2019-15988MEDIUMCisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 1.0%CVE-2026-48384MEDIUMColdFusion | Improper Input Validation (CWE-20)EPSS 1.0%CVE-2023-26022MEDIUMIBM Db2 denial of serviceEPSS 1.0%CVE-2022-39226MEDIUMDiscourse user profile location and website fields were not sufficiently length-limitedEPSS 1.0%CVE-2021-39186MEDIUMImproper Input Validation in GlobalNewFilesEPSS 1.0%CVE-2020-8100CRITICALIncomplete validation in detection code in Bitdefender Engines (VA-8589)EPSS 1.0%