Fallos del tipo CWE-20

5428 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

CVE-2022-43919MEDIUMIBM MQ denial of serviceEPSS 0.7%CVE-2026-22862HIGHgo-ethereum has a DoS via malicious p2p messageEPSS 0.7%CVE-2023-26070CRITICALCertain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 4 of 4).EPSS 0.7%CVE-2023-31009HIGHNVIDIA DGX H100 BMC contains a vulnerability in the REST service, where an attacker may cause improper input validation. A successful exploiEPSS 0.7%CVE-2017-12275—A vulnerability in the implementation of 802.11v Basic Service Set (BSS) Transition Management functionality in Cisco Wireless LAN ControlleEPSS 0.7%CVE-2023-26069CRITICALCertain Lexmark devices through 2023-02-19 mishandle Input Validation (issue 3 of 4).EPSS 0.7%CVE-2026-27928HIGHWindows Hello Security Feature Bypass VulnerabilityEPSS 0.7%CVE-2022-30233MEDIUMA CWE-20: Improper Input Validation vulnerability exists that could allow the product to be maliciously manipulated when the user is trickedEPSS 0.7%CVE-2026-21548HIGHIn nr modem, there is a possible improper input validation. This could lead to remote denial of service with System execution privileges neeEPSS 0.7%CVE-2026-21554HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2026-21549HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2026-21553HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2026-21550HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2026-28894HIGHA denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.EPSS 0.7%CVE-2022-3181HIGHAn Improper Input Validation vulnerability exists in Trihedral VTScada version 12.0.38 and prior. A specifically malformed HTTP request coulEPSS 0.7%CVE-2026-21551HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2025-57810HIGHjsPDF Parsing of Corrupt PNGs Leads to Potential Denial of Service (DoS)EPSS 0.7%CVE-2026-21552HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2026-21555HIGHIn modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privilegesEPSS 0.7%CVE-2022-4033MEDIUMQuiz and Survey Master <= 8.0.4 - Improper Input ValidationEPSS 0.7%