Falhas do tipo CWE-20

5.847 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-2021-22768CRITICALA CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All VersionsEPSS 2.8%CVE-2018-0419—A vulnerability in certain attachment detection mechanisms of Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote aEPSS 2.8%CVE-2024-0057CRITICALNET, .NET Framework, and Visual Studio Security Feature Bypass VulnerabilityEPSS 2.8%CVE-2022-24098HIGHAdobe Photoshop PCX File Parsing Memory Corruption Remote Code Execution VulnerabilityEPSS 2.8%CVE-2019-11687HIGHAn issue was discovered in the DICOM Part 10 File Format in the NEMA DICOM Standard 1995 through 2019b and continuing in current implementatEPSS 2.8%CVE-2020-6655MEDIUMFile parsing Out-Of-Bounds read remote code executionEPSS 2.8%CVE-2019-1741HIGHCisco IOS XE Software Encrypted Traffic Analytics Denial of Service VulnerabilityEPSS 2.8%CVE-2014-2357—SUBNET SubSTATION Server 2 Telegyr 8979 Master Protocol Improper Input ValidationEPSS 2.8%CVE-2022-45875CRITICALApache DolphinScheduler: Remote command execution Vulnerability in script alert pluginEPSS 2.8%CVE-2019-1710CRITICALCisco IOS XR 64-Bit Software for Cisco ASR 9000 Series Aggregation Services Routers Network Isolation VulnerabilityEPSS 2.8%CVE-2018-12547—In Eclipse OpenJ9, prior to the 0.12.0 release, the jio_snprintf() and jio_vsnprintf() native methods ignored the length parameter. This affEPSS 2.7%CVE-2024-38095HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 2.7%CVE-2023-47804—Apache OpenOffice: Macro URL arbitrary script executionEPSS 2.7%CVE-2025-21230HIGHMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.7%CVE-2023-36707MEDIUMWindows Deployment Services Denial of Service VulnerabilityEPSS 2.7%CVE-2018-0371—A vulnerability in the Web Admin Interface of Cisco Meeting Server could allow an authenticated, remote attacker to cause a denial of servicEPSS 2.7%CVE-2021-3580—A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to proviEPSS 2.7%CVE-2021-36048HIGHXMP Toolkit SDK Improper Input Validation Could Lead To Arbitrary Code ExecutionEPSS 2.7%CVE-2021-36047HIGHXMP Toolkit SDK Improper Input Validation Could Lead To Arbitrary Code ExecutionEPSS 2.7%CVE-2021-32974CRITICALMoxa NPort IAW5000A-I/O Series Serial Device Server Improper Input ValidationEPSS 2.7%