Fallos del tipo CWE-20

5459 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-2023-28029MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-25936MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-45171MEDIUMIBM AIX denial of serviceEPSS 0.2%CVE-2023-49248—Vulnerability of unauthorized file access in the Settings app. Successful exploitation of this vulnerability may cause unauthorized file accEPSS 0.2%CVE-2023-28061MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-45169MEDIUMIBM AIX denial of serviceEPSS 0.2%CVE-2023-28052MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-45175MEDIUMIBM AIX denial of serviceEPSS 0.2%CVE-2023-28034MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-45173MEDIUMIBM AIX denial of serviceEPSS 0.2%CVE-2023-28044MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28040MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28032MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28030MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28035MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28028MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-25937MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28041MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2026-22568MEDIUMUnauthorized information retrieval in ZIA Admin UIEPSS 0.2%CVE-2026-43813HIGHA validation issue was addressed with improved input sanitization. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 2EPSS 0.2%