Falhas do tipo CWE-20

5.842 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-2020-3249CRITICALMultiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big DataEPSS 23.6%CVE-2024-24549HIGHApache Tomcat: HTTP/2 header handling DoSEPSS 23.1%CVE-2025-43560CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 22.6%CVE-2017-7924—An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, EPSS 22.2%CVE-2023-28130HIGHLocal user may lead to privilege escalation using Gaia Portal hostnames page.EPSS 20.9%CVE-2023-24329HIGHAn issue in the urllib.parse component of Python before 3.11.4 allows attackers to bypass blocklisting methods by supplying a URL that startEPSS 20.5%CVE-2023-36563MEDIUMMicrosoft WordPad Information Disclosure VulnerabilityEPSS 20.3%KEVCVE-2019-15606—Including trailing white space in HTTP header values in Nodejs 10, 12, and 13 causes bypass of authorization based on header value comparisoEPSS 20.0%CVE-2023-36761MEDIUMMicrosoft Word Information Disclosure VulnerabilityEPSS 19.6%KEVCVE-2025-60787HIGHMotionEye v0.43.1b4 and before is vulnerable to OS Command Injection in configuration parameters such as image_file_name. Unsanitized user iEPSS 18.5%CVE-2023-4481HIGHJunos OS and Junos OS Evolved: A crafted BGP UPDATE message allows a remote attacker to de-peer (reset) BGP sessions (CVE-2023-4481)EPSS 18.4%CVE-2018-0147CRITICALA vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) prior to release 5.8 patch 9 could allow an unautheEPSS 18.2%KEVCVE-2024-23469CRITICALSolarWinds Access Rights Manager Exposed Dangerous Method Remote Code Execution VulnerabilityEPSS 17.9%CVE-2026-41268HIGHFlowise: Flowise Parameter Override Bypass Remote Command ExecutionEPSS 17.4%CVE-2023-2071CRITICALFactoryTalk View Machine Edition Vulnerable to Remote Code ExecutionEPSS 17.3%CVE-2025-30294MEDIUMColdFusion | Improper Input Validation (CWE-20)EPSS 17.2%CVE-2016-9587MEDIUMAnsible before versions 2.1.4, 2.2.1 is vulnerable to an improper input validation in Ansible's handling of data sent from client systems. AEPSS 17.0%CVE-2014-0207MEDIUMThe cdf_read_short_sector function in cdf.c in file before 5.19, as used in the Fileinfo component in PHP before 5.4.30 and 5.5.x before 5.5EPSS 16.9%CVE-2018-0301—A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the managEPSS 16.7%CVE-2022-21820MEDIUMNVIDIA DCGM contains a vulnerability in nvhostengine, where a network user can cause detection of error conditions without action, which mayEPSS 16.5%