Falhas do tipo CWE-20

5.399 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-2019-1933MEDIUMCisco Email Security Appliance Content Filter Bypass VulnerabilityEPSS 1.2%CVE-2021-29468HIGHArbitrary code execution when checking out an attacker-controlled Git branchEPSS 1.2%CVE-2024-21448MEDIUMMicrosoft Teams for Android Information Disclosure VulnerabilityEPSS 1.2%CVE-2024-24683MEDIUMApache Hop Engine: ID isn't escaped when generating HTMLEPSS 1.2%CVE-2026-81995CRITICALAdobe Experience Manager Forms JEE | Improper Input Validation (CWE-20)EPSS 1.2%CVE-2018-0135—A vulnerability in Cisco Unified Communications Manager could allow an authenticated, remote attacker to access sensitive information on an EPSS 1.2%CVE-2024-12912HIGHAn improper input insertion vulnerability in AiCloud on certain router models may lead to arbitrary command execution. Refer to the '01/02/2EPSS 1.2%CVE-2016-10543—call is an HTTP router that is primarily used by the hapi framework. There exists a bug in call versions 2.0.1-3.0.1 that does not validate EPSS 1.2%CVE-2020-3238HIGHCisco IOx Application Framework Arbitrary File Creation VulnerabilityEPSS 1.2%CVE-2022-22727—A CWE-20: Improper Input Validation vulnerability exists that could allow an unauthenticated attacker to view data, change settings, impact EPSS 1.2%CVE-2016-7073MEDIUMAn issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, allowing an attacker in position of man-in-EPSS 1.2%CVE-2026-50328HIGHWindows Server Update Service (WSUS) Tampering VulnerabilityEPSS 1.2%CVE-2026-26154HIGHWindows Server Update Service (WSUS) Tampering VulnerabilityEPSS 1.2%CVE-2022-22241HIGHJunos OS: Vulnerability in J-Web may allow deserialization without authenticationEPSS 1.2%CVE-2025-31233MEDIUMThe issue was addressed with improved input sanitization. This issue is fixed in iOS 18.5 and iPadOS 18.5, iPadOS 17.7.7, macOS Sequoia 15.5EPSS 1.2%CVE-2021-31372HIGHJunos OS: J-Web allows a locally authenticated attacker to escalate their privileges to root.EPSS 1.2%CVE-2026-33250HIGHCrash when receiving specially-crafted packetsEPSS 1.2%CVE-2016-7074MEDIUMAn issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, allowing an attacker in position of man-in-EPSS 1.2%CVE-2022-4904HIGHA flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possiEPSS 1.2%CVE-2024-45219HIGHApache CloudStack: Uploaded and registered templates and volumes can be used to abuse KVM-based infrastructureEPSS 1.2%