Weaknesses of type CWE-20

5,455 results

Validação inadequada de entrada

O software recebe dados do usuário ou de fontes externas, mas não verifica ou verifica de forma incompleta se esses dados têm as propriedades necessárias para processar com segurança. Isso permite que entradas malformadas, maliciosas ou inesperadas passem por controles e causem comportamentos indevidos — desde crashes até injeção de código.

Example

Uma aplicação web recebe um parâmetro numérico via GET, mas não valida se é realmente um número inteiro válido antes de usá-lo em uma consulta SQL. Um atacante envia um valor com caracteres especiais (ex: `1' OR '1'='1`), conseguindo injetar código SQL direto no banco de dados.

How to mitigate

Implemente validação rigorosa na entrada: defina o tipo, formato, comprimento e intervalo esperados; rejeite tudo que não se encaixe. Use listas de caracteres permitidos ('whitelist'), escape de dados para o contexto específico (SQL, HTML, URL) e bibliotecas de validação consolidadas. Nunca confie em dados do cliente.

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-2023-45169MEDIUMIBM AIX denial of serviceEPSS 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-2023-28031MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28059MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28056MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28050MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28033MEDIUM 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-2023-45175MEDIUMIBM AIX denial of serviceEPSS 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-2023-28034MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 0.2%CVE-2023-28039MEDIUM Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user with administrator privileges may potenEPSS 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-2023-28027MEDIUM 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-2023-25936MEDIUM 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-2026-45329HIGHESF-IDF: Out-of-Bounds Read in ESP-TEE Secure Service WrappersEPSS 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%