Falhas do tipo CWE-20

5.887 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-2017-12299—A vulnerability exists in the process of creating default IP blocks during device initialization for Cisco ASA Next-Generation Firewall ServEPSS 1.2%CVE-2021-1465MEDIUMA vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to condEPSS 1.2%CVE-2022-36784CRITICALElsight – Elsight Halo Remote Code Execution (RCE)EPSS 1.2%CVE-2024-34365CRITICALApache Karaf Cave: Cave SSRF and arbitrary file accessEPSS 1.2%CVE-2022-36023HIGHRemote denial of service in Hyperledger Fabric GatewayEPSS 1.2%CVE-2025-64986HIGHCommand Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort InstructionEPSS 1.2%CVE-2021-36335MEDIUMDell EMC CloudLink 7.1 and all prior versions contain an Improper Input Validation Vulnerability. A remote low privileged attacker, may poteEPSS 1.2%CVE-2021-3567—A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applicationsEPSS 1.2%CVE-2020-5403MEDIUMDoS Via Malformed URL with Reactor Netty HTTP ServerEPSS 1.2%CVE-2025-27212CRITICALAn Improper Input Validation in certain UniFi Access devices could allow a Command Injection by a malicious actor with access to UniFi AccesEPSS 1.2%CVE-2020-3567MEDIUMCisco Industrial Network Director Denial of Service VulnerabilityEPSS 1.2%CVE-2023-26364MEDIUMDenial of Service of regular expression in package @adobe/css-toolsEPSS 1.2%CVE-2019-15966HIGHA vulnerability in the web application of Cisco TelePresence Advanced Media Gateway could allow an authenticated, remote attacker to cause aEPSS 1.2%CVE-2020-8475MEDIUMABB Central Licensing System - Denial of Service VulnerabilityEPSS 1.2%CVE-2025-1087CRITICALArbitrary Code Execution in Kong Insomnia Desktop ApplicationEPSS 1.1%CVE-2021-42857MEDIUMDirectory Traversal Partial Write at AgentDaServletEPSS 1.1%CVE-2021-32707MEDIUMBypass of image blocking in Nextcloud MailEPSS 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-2021-44371HIGHA 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-2021-44363HIGHA 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%