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-2021-44417HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44392HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44409HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44402HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44403HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44415HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44410HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44414HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44395HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2019-1830MEDIUMCisco Wireless LAN Controller Locally Significant Certificate Denial of Service VulnerabilityEPSS 1.2%CVE-2023-21685HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 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-2024-45167CRITICALAn issue was discovered in UCI IDOL 2 (aka uciIDOL or IDOL2) through 2.12. Due to improper input validation, improper deserialization, and iEPSS 1.2%CVE-2024-20004HIGHIn Modem NL1, there is a possible system crash due to an improper input validation. This could lead to remote denial of service, if NW sent EPSS 1.2%CVE-2021-26612HIGHtobesoft Nexacro platform arbitrary file creation vulnerabilityEPSS 1.2%CVE-2018-0237—A vulnerability in the file type detection mechanism of the Cisco Advanced Malware Protection (AMP) for Endpoints macOS Connector could alloEPSS 1.2%CVE-2022-30232HIGHA CWE-20: Improper Input Validation vulnerability exists that could cause potential remote code execution when an attacker is able to intercEPSS 1.2%CVE-2021-29431HIGHSSRF in Sydent due to missing validation of hostnamesEPSS 1.2%CVE-2024-22065MEDIUMZTE MF258 Pro product has a OS Command injection vulnerabilityEPSS 1.2%CVE-2023-2454HIGHschema_element defeats protective search_path changes; It was found that certain database calls in PostgreSQL could permit an authed attackeEPSS 1.2%