Fallos del tipo CWE-20

5455 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-2020-15292MEDIUMLack of validation on data read from guest memory in Bitdefender HVI (VA-9333)EPSS 0.3%CVE-2019-1944MEDIUMCisco Adaptive Security Appliance Smart Tunnel VulnerabilitiesEPSS 0.3%CVE-2022-21181HIGHImproper input validation for some Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products may allow a privileged user to potentially enaEPSS 0.3%CVE-2021-46767MEDIUMInsufficient input validation in the ASP may allow an attacker with physical access, unauthorized write access to memory potentially leadingEPSS 0.3%CVE-2024-23482HIGHZScalerService Local Privilege EscalationEPSS 0.3%CVE-2020-15293MEDIUMMemory corruption in Bitdefender Hypervisor Introspection (VA-9336)EPSS 0.3%CVE-2026-20685MEDIUMAn attacker in a privileged network position may be able to leak sensitive information. A path handling issue was addressed with improved vaEPSS 0.3%CVE-2026-18014MEDIUMInsufficient validation of untrusted input in DevTools in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass navigatioEPSS 0.3%CVE-2026-100370MEDIUMDOMSanitizer - Incomplete data: URL Sanitization in DOMSanitizer::isDangerousUrl() Allows Base64-Encoded Payloads to Bypass href and xlink:href ValidationEPSS 0.3%CVE-2026-84357MEDIUMImproper input validation in Omnibox in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to bypaEPSS 0.3%CVE-2026-17929MEDIUMInsufficient validation of untrusted input in DevTools in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass navigatioEPSS 0.3%CVE-2026-17789MEDIUMInsufficient validation of untrusted input in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to bypEPSS 0.3%CVE-2025-8414CRITICALZigbee Green Power Host Buffer Overflow VulnerabilityEPSS 0.3%CVE-2026-62998MEDIUMREDAXO: Unwhitelisted ORDER BY Column in rex_list Allows Authenticated Column EnumerationEPSS 0.3%CVE-2021-3452MEDIUMA potential vulnerability in the system shutdown SMI callback function in some ThinkPad models may allow an attacker with local access and eEPSS 0.3%CVE-2026-34773MEDIUMElectron: Registry key path injection in app.setAsDefaultProtocolClient on WindowsEPSS 0.3%CVE-2019-15273MEDIUMCisco TelePresence Collaboration Endpoint Software Arbitrary File Overwrite VulnerabilitiesEPSS 0.3%CVE-2023-5274LOWImproper Input Validation vulnerability in simulation function of GX Works2 allows an attacker to cause a denial-of-service (DoS) condition EPSS 0.3%CVE-2021-34755MEDIUMCisco Firepower Threat Defense Software Command Injection VulnerabilitiesEPSS 0.3%CVE-2026-93995MEDIUMApache MINA SSHD: Remote execution of JGit "archive -o=file.zip" can write file on the serverEPSS 0.3%