Falhas do tipo CWE-20

5.439 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-2023-21558HIGHWindows Error Reporting Service Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2020-3487HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.5%CVE-2026-27304CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 0.5%CVE-2026-26310MEDIUMCrash for scoped ip address in Envoy during DNSEPSS 0.5%CVE-2025-20148HIGHCisco Secure Firewall Management Center HTML Injection VulnerabilityEPSS 0.5%CVE-2024-47857CRITICALSSH Communication Security PrivX versions between 18.0-36.0 implement insufficient validation on public key signatures when using native SSHEPSS 0.5%CVE-2026-12954HIGHMapster WP Maps <= 1.23.0 - Authenticated (Subscriber+) Arbitrary User Meta Write via 'acf-photo-gallery-groups' ParameterEPSS 0.5%CVE-2025-9066HIGHRockwell Automation FactoryTalk® ViewPoint XXE to Denial-of-Service VulnerabilityEPSS 0.5%CVE-2026-49095HIGHImproper Input Validation in Kibana Fleet Leading to Privilege EscalationEPSS 0.5%CVE-2025-71007HIGHAn input validation vulnerability in the oneflow.index_add component of OneFlow v0.9.0 allows attackers to cause a Denial of Service (DoS) vEPSS 0.5%CVE-2024-32645MEDIUMvyper performs incorrect topic logging in raw_logEPSS 0.5%CVE-2026-65336MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1EPSS 0.5%CVE-2020-3428HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family WLAN Local Profiling Denial of Service VulnerabilityEPSS 0.5%CVE-2026-65340MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1EPSS 0.5%CVE-2026-65337MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1EPSS 0.5%CVE-2020-3434MEDIUMCisco AnyConnect Secure Mobility Client for Windows Denial of Service VulnerabilityEPSS 0.5%CVE-2024-50343LOWIncorrect response from Validator when input ends with `\n` in symfony/validatorEPSS 0.5%CVE-2024-32646MEDIUMvyper performs double eval of the slice args when buffer from adhoc locationsEPSS 0.5%CVE-2021-39256MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_inode_lookup_by_name in NTFS-3G < 2021.8.22.EPSS 0.5%CVE-2026-23886MEDIUMSwift W3C TraceContext has malformed HTTP header that can cause a crashEPSS 0.5%