Falhas do tipo CWE-20

5.423 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-2026-51599CRITICALAn insufficient input validation vulnerability in the RTSP service of MERCURY MIPC252W v1.0.5 Build 230306 Rel.79931n allows an unauthenticaEPSS 0.6%CVE-2019-1834HIGHCisco Aironet Series Access Points Denial of Service VulnerabilityEPSS 0.6%CVE-2026-44778LOWInspektor Gadget: Unprivileged container can crash USDT note parser via crafted ELFEPSS 0.6%CVE-2026-49434HIGHApache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: LdapNetworkConnector instantiates denied transports and a remote-properties brokerEPSS 0.6%CVE-2026-49218HIGHImageMagick: Policy Bypass in DCM decoder could result in image with invalid dimensionsEPSS 0.6%CVE-2026-33151HIGHsocket.io allows an unbounded number of binary attachmentsEPSS 0.6%CVE-2026-46585HIGHApache Camel Lucene: The query control headers used non-Camel-prefixed names (QUERY, RETURN_LUCENE_DOCS) that bypass the HTTP header filter, allowing an HTTP client to inject the full-text search queryEPSS 0.6%CVE-2026-81875HIGHHAPI FHIR: SHCParser unbounded DEFLATE decompression causes denial of serviceEPSS 0.6%CVE-2024-52309MEDIUMSFTPGo allows administrators to restrict command execution from the EventManagerEPSS 0.6%CVE-2026-69185HIGHSocket.IO: Zero-attachment Memory ExhaustionEPSS 0.6%CVE-2026-38639HIGHAn issue in the parse_month function (/time/strptime.rs) of relibc commit ab6a2e allows attackers to cause a Denial of Service (DoS) via parEPSS 0.6%CVE-2026-81876HIGHHAPI FHIR: SHCParser DEFLATE infinite loop causes denial of serviceEPSS 0.6%CVE-2025-27731HIGHMicrosoft OpenSSH for Windows Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-13681HIGHUncode <= 2.9.1.6 - Unauthenticated Arbitrary File Read in uncode_admin_get_oembedEPSS 0.6%CVE-2020-26082MEDIUMA vulnerability in the zip decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthentiEPSS 0.6%CVE-2021-29462HIGHDNS rebinding in pupnpEPSS 0.6%CVE-2021-1466MEDIUMCisco SD-WAN vDaemon Buffer Overflow VulnerabilityEPSS 0.6%CVE-2025-31215MEDIUMThe issue was addressed with improved checks. This issue is fixed in Safari 18.5, iOS 18.5 and iPadOS 18.5, iPadOS 17.7.7, macOS Sequoia 15.EPSS 0.6%CVE-2023-37546MEDIUMCODESYS: Improper Input Validation in CmpApp componentEPSS 0.6%CVE-2023-37545MEDIUMCODESYS: Improper Input Validation in CmpApp componentEPSS 0.6%