Falhas do tipo CWE-20

5.455 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-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%