Falhas do tipo CWE-20

5.391 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-2026-13001CRITICALPodlove Podcast Publisher <= 4.5.1 - Unauthenticated Arbitrary File Upload via podlove_image_cache_url ParameterEPSS 3.8%CVE-2021-21085HIGHAdobe Connect CSV injection via export feature could lead to code executionEPSS 3.7%CVE-2019-1756HIGHCisco IOS XE Software Command Injection VulnerabilityEPSS 3.7%CVE-2017-14023—An Improper Input Validation issue was discovered in Siemens SIMATIC PCS 7 V8.1 prior to V8.1 SP1 with WinCC V7.3 Upd 13, and V8.2 all versiEPSS 3.7%CVE-2020-10922HIGHThis vulnerability allows remote attackers to create a denial-of-service condition on affected installations of C-MORE HMI EA9 Firmware versEPSS 3.7%CVE-2021-21372HIGHNimble arbitrary code execution for specially crafted package metadataEPSS 3.6%CVE-2026-27304CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 3.6%CVE-2023-5143MEDIUMD-Link DAR-7000 webmailattach.php Privilege EscalationEPSS 3.6%CVE-2017-16226—The static-eval module is intended to evaluate statically-analyzable expressions. In affected versions, untrusted user input is able to acceEPSS 3.6%CVE-2024-21312HIGH.NET Framework Denial of Service VulnerabilityEPSS 3.6%CVE-2018-0228—A vulnerability in the ingress flow creation functionality of Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remoteEPSS 3.6%CVE-2025-24513MEDIUMingress-nginx controller - auth secret file path traversal vulnerabilityEPSS 3.5%CVE-2024-38021HIGHMicrosoft Outlook Remote Code Execution VulnerabilityEPSS 3.5%CVE-2018-0409—A vulnerability in the XCP Router service of the Cisco Unified Communications Manager IM & Presence Service (CUCM IM&P) and the Cisco TelePrEPSS 3.5%CVE-2019-1650HIGHCisco SD-WAN Solution Arbitrary File Overwrite VulnerabilityEPSS 3.5%CVE-2020-14503—Advantech iView, versions 5.6 and prior, has an improper input validation vulnerability. Successful exploitation of this vulnerability couldEPSS 3.5%CVE-2021-35247MEDIUMImproper Input Validation Vulnerability in Serv-UEPSS 3.5%KEVCVE-2019-1894HIGHCisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write VulnerabilityEPSS 3.5%CVE-2025-8876CRITICALCommand Injection VulnerabilityEPSS 3.4%KEVCVE-2014-2360—OleumTech WIO Family Improper Input ValidationEPSS 3.4%