Falhas do tipo CWE-20

5.430 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-2021-33114MEDIUMImproper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may EPSS 0.5%CVE-2026-5174HIGHImproper Access Control Vulnerability in Progress MOVEit AutomationEPSS 0.5%CVE-2026-26935MEDIUMImproper Input Validation in Kibana Leading to Denial of ServiceEPSS 0.5%CVE-2018-1099—DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the bEPSS 0.5%CVE-2017-7517LOWAn input validation vulnerability exists in Openshift Enterprise due to a 1:1 mapping of tenants in Hawkular Metrics and projects/namespacesEPSS 0.5%CVE-2026-45723LOWOmni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematicEPSS 0.5%CVE-2026-46910CRITICALVulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Enterprise Infrastructure Security). SupportedEPSS 0.5%CVE-2026-77710MEDIUMSTIX2 Parser Confusion and Mass Assignment Allow Unauthorized MISP Attribute Metadata Injection in misp-stix libraryEPSS 0.5%CVE-2022-35966MEDIUMSegfault in `QuantizedAvgPool` in TensorFlowEPSS 0.5%CVE-2022-3429MEDIUMA denial-of-service vulnerability was found in the firmware used in Lenovo printers, where users send illegal or malformed strings to an opeEPSS 0.5%CVE-2022-35972MEDIUMSegfault in `QuantizedBiasAdd` in TensorFlowEPSS 0.5%CVE-2022-48605—Input verification vulnerability in the fingerprint module. Successful exploitation of this vulnerability will affect confidentiality, integEPSS 0.5%CVE-2026-49475HIGHFreeSWITCH: Out-of-bounds memory access in core STUN attribute parsingEPSS 0.5%CVE-2023-34422MEDIUMA valid, authenticated LXCA user with elevated privileges may be able to delete folders in the LXCA filesystem through a specifically crafteEPSS 0.5%CVE-2022-35964MEDIUMSegfault in `BlockLSTMGradV2` in TensorFlowEPSS 0.5%CVE-2026-30078HIGHOpenAirInterface V2.2.0 AMF crashes when it receives an NGAP message with invalid procedure code or invalid PDU-type. For example when the mEPSS 0.5%CVE-2023-34421MEDIUMA valid, authenticated LXCA user with elevated privileges may be able to replace filesystem data through a specifically crafted web API callEPSS 0.5%CVE-2022-35967MEDIUMSegfault in `QuantizedAdd` in TensorFlowEPSS 0.5%CVE-2024-21978MEDIUMImproper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially leading to data leakagEPSS 0.5%CVE-2025-6444MEDIUMServiceStack GetErrorResponse Improper Input Validation NTLM Relay VulnerabilityEPSS 0.5%