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-2021-44377HIGHA 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-2022-20750MEDIUMCisco Redundancy Configuration Manager for Cisco StarOS Software TCP Denial of Service VulnerabilityEPSS 1.1%CVE-2025-30452CRITICALThe issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS Ventura 13.7.5. An inputEPSS 1.1%CVE-2025-58364MEDIUMcups: Remote DoS via null dereferenceEPSS 1.1%CVE-2020-35493—A flaw exists in binutils in bfd/pef.c. An attacker who is able to submit a crafted PEF file to be parsed by objdump could cause a heap buffEPSS 1.1%CVE-2024-8073CRITICALCommand Injection Vulnerability in Hillstone Networks Web Application FirewallEPSS 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-2025-8266MEDIUMyanyutao0402 ChanCMS collect.js getArticle deserializationEPSS 1.1%CVE-2026-42613CRITICALGrav: Privilege Escalation via Missing Server-Side Validation of groups/accessEPSS 1.1%CVE-2023-2727MEDIUMBypassing policies imposed by the ImagePolicyWebhook admission pluginEPSS 1.1%CVE-2024-1481MEDIUMFreeipa: specially crafted http requests potentially lead to denial of serviceEPSS 1.1%CVE-2024-52279HIGHApache Zeppelin: Arbitrary file read by adding malicious JDBC connection stringEPSS 1.1%CVE-2025-64988HIGHCommand Injection in 1E-Nomad-GetCmContentLocations InstructionEPSS 1.1%CVE-2025-64987HIGHCommand Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC InstructionEPSS 1.1%CVE-2023-42449HIGHMalicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commitsEPSS 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%CVE-2020-26185HIGHDell BSAFE Micro Edition Suite, versions prior to 4.5.1, contain a Buffer Over-Read Vulnerability.EPSS 1.1%CVE-2023-38701CRITICALHydra's committed UTxOs at Commit validator and UTxOs at Initial validator can be spent arbitrarily by anyoneEPSS 1.1%CVE-2022-2385HIGHAccessKeyID validation bypassEPSS 1.1%