Falhas do tipo CWE-20

5.396 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-2026-41293CRITICALApache Tomcat: HTTP/2 request headers not validatedEPSS 1.7%CVE-2025-34116HIGHIPFire < 2.19 Core Update 101 proxy.cgi RCEEPSS 1.7%CVE-2021-25434—Improper input validation vulnerability in Tizen bootloader prior to Firmware update JUL-2021 Release allows arbitrary code execution using EPSS 1.7%CVE-2021-25435—Improper input validation vulnerability in Tizen bootloader prior to Firmware update JUL-2021 Release allows arbitrary code execution using EPSS 1.7%CVE-2024-43455HIGHWindows Remote Desktop Licensing Service Spoofing VulnerabilityEPSS 1.7%CVE-2023-7163CRITICALD-Link D-View 8 Unauthenticated Probe-Core Server CommunicationEPSS 1.7%CVE-2018-10923HIGHIt was found that the "mknod" call derived from mknod(2) can create files pointing to devices on a glusterfs server node. An authenticated aEPSS 1.7%CVE-2020-3230HIGHCisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service VulnerabilityEPSS 1.7%CVE-2018-19005—Cscape, Version 9.80.75.3 SP3 and prior. An improper input validation vulnerability has been identified that may be exploited by processing EPSS 1.7%CVE-2020-3516MEDIUMCisco IOS XE Software Web UI Improper Input Validation VulnerabilityEPSS 1.7%CVE-2023-30535HIGHSnowflake JDBC vulnerable to command injection via SSO URL authenticationEPSS 1.7%CVE-2024-49057HIGHMicrosoft Defender for Endpoint on Android Spoofing VulnerabilityEPSS 1.7%CVE-2017-6021—In Schneider Electric ClearSCADA 2014 R1 (build 75.5210) and prior, 2014 R1.1 (build 75.5387) and prior, 2015 R1 (build 76.5648) and prior, EPSS 1.7%CVE-2019-1720MEDIUMCisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service VulnerabilityEPSS 1.7%CVE-2024-55020CRITICALA command injection vulnerability in the DHCP activation feature of Weintek cMT-3072XH2 easyweb Web Version v2.1.53, OS v20231011 allows attEPSS 1.7%CVE-2020-27833—A Zip Slip vulnerability was found in the oc binary in openshift-clients where an arbitrary file write is achieved by using a specially crafEPSS 1.7%CVE-2022-36087MEDIUMOAuthLib vulnerable DoS when attacker provides malicious IPV6 URIEPSS 1.7%CVE-2020-7880HIGHdouzone NeoRS remote support program ActiveX vulnerabilityEPSS 1.7%CVE-2025-47171MEDIUMMicrosoft Outlook Remote Code Execution VulnerabilityEPSS 1.7%CVE-2023-27604HIGHApache Airflow Sqoop Provider: Airflow Sqoop Provider RCE VulnerabilityEPSS 1.7%