Falhas do tipo CWE-20

5.887 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-2022-24952—Several denial of service vulnerabilities exist in Eternal Terminal prior to version 6.2.0, including a DoS triggered remotely by an invalidEPSS 1.7%CVE-2026-25892HIGHAdminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version EndpointEPSS 1.7%CVE-2017-6770—Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 througEPSS 1.7%CVE-2020-15168LOWFile size limit bypass in node-fetchEPSS 1.7%CVE-2023-46289HIGHRockwell Automation FactoryTalk® View Site Edition Vulnerable to Improper Input ValidationEPSS 1.7%CVE-2023-35367CRITICALWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2023-35366CRITICALWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2026-40261HIGHComposer has Command Injection via Malicious Perforce ReferenceEPSS 1.7%CVE-2021-32970HIGHMoxa NPort IAW5000A-I/O Series Serial Device Server Improper Input ValidationEPSS 1.7%CVE-2022-20797MEDIUMCisco Secure Network Analytics Remote Code Execution VulnerabilityEPSS 1.7%CVE-2021-43762MEDIUMAdobe Experience Manager Unicode normalization leads to dispatcher bypassEPSS 1.7%CVE-2023-36897HIGHVisual Studio Tools for Office Runtime Spoofing VulnerabilityEPSS 1.7%CVE-2023-32321CRITICALCKAN remote code execution and private information access via crafted resource idsEPSS 1.7%CVE-2019-1787HIGHClam AntiVirus PDF Denial of Service VulnerabilityEPSS 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-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-2023-7163CRITICALD-Link D-View 8 Unauthenticated Probe-Core Server CommunicationEPSS 1.7%CVE-2022-24093CRITICALAdobe Commerce post-auth improper input validation leads to remote code executionEPSS 1.7%CVE-2025-34105CRITICALDiskBoss Enterprise Stack-Based Buffer Overflow RCEEPSS 1.7%CVE-2020-3516MEDIUMCisco IOS XE Software Web UI Improper Input Validation VulnerabilityEPSS 1.7%