Falhas do tipo CWE-20

5.393 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-2025-29814CRITICALMicrosoft Partner Center Elevation of Privilege VulnerabilityEPSS 2.2%CVE-2023-35377MEDIUMMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.2%CVE-2023-35376MEDIUMMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.2%CVE-2023-32057CRITICALMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.2%CVE-2020-25721—Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to EPSS 2.2%CVE-2017-12264—A vulnerability in the Web Admin Interface of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a denial of servEPSS 2.2%CVE-2025-34111CRITICALTiki Wiki <= 15.1 ELFinder Unauthenticated File Upload RCEEPSS 2.2%CVE-2025-24970HIGHSslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngineEPSS 2.2%CVE-2023-36893MEDIUMMicrosoft Outlook Spoofing VulnerabilityEPSS 2.2%CVE-2022-47937CRITICALMultiple parsing problems in the Apache Sling Commons JSON moduleEPSS 2.2%CVE-2019-1740HIGHCisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service VulnerabilitiesEPSS 2.2%CVE-2019-1743HIGHCisco IOS XE Software Arbitrary File Upload VulnerabilityEPSS 2.2%CVE-2023-2728MEDIUMBypassing enforce mountable secrets policy imposed by the ServiceAccount admission pluginEPSS 2.2%CVE-2023-28710HIGHApache Airflow Spark Provider Arbitrary File Read via JDBCEPSS 2.2%CVE-2020-7588—A vulnerability has been identified in Opcenter Execution Discrete (All versions < V3.2), Opcenter Execution Foundation (All versions < V3.2EPSS 2.2%CVE-2020-6651HIGHCommand injection via specially crafted file name during config file uploadEPSS 2.1%CVE-2021-3754—A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. ThisEPSS 2.1%CVE-2025-21350MEDIUMWindows Kerberos Denial of Service VulnerabilityEPSS 2.1%CVE-2023-40272HIGHApache Airflow Spark Provider Arbitrary File Read via JDBCEPSS 2.1%CVE-2020-25713—A malformed input file can lead to a segfault due to an out of bounds array access in raptor_xml_writer_start_element_common.EPSS 2.1%