Weaknesses of type CWE-20

5,847 results

Validação inadequada de entrada

O software recebe dados do usuário ou de fontes externas, mas não verifica ou verifica de forma incompleta se esses dados têm as propriedades necessárias para processar com segurança. Isso permite que entradas malformadas, maliciosas ou inesperadas passem por controles e causem comportamentos indevidos — desde crashes até injeção de código.

Example

Uma aplicação web recebe um parâmetro numérico via GET, mas não valida se é realmente um número inteiro válido antes de usá-lo em uma consulta SQL. Um atacante envia um valor com caracteres especiais (ex: `1' OR '1'='1`), conseguindo injetar código SQL direto no banco de dados.

How to mitigate

Implemente validação rigorosa na entrada: defina o tipo, formato, comprimento e intervalo esperados; rejeite tudo que não se encaixe. Use listas de caracteres permitidos ('whitelist'), escape de dados para o contexto específico (SQL, HTML, URL) e bibliotecas de validação consolidadas. Nunca confie em dados do cliente.

CVE-2025-29814CRITICALMicrosoft Partner Center Elevation of Privilege VulnerabilityEPSS 2.3%CVE-2018-0260—A vulnerability in the web interface of Cisco MATE Live could allow an unauthenticated, remote attacker to view and download the contents ofEPSS 2.3%CVE-2024-5990HIGHThinManager® ThinServer™ Improper Input Validation VulnerabilityEPSS 2.3%CVE-2021-37150MEDIUMProtocol vs scheme mismatchEPSS 2.3%CVE-2020-8349CRITICALAn internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Operating System (CNOSEPSS 2.2%CVE-2018-8869—In Lantech IDS 2102 2.0 and prior, nearly all input fields allow for arbitrary input on the device. A CVSS v3 base score of 9.8 has been calEPSS 2.2%CVE-2021-36032HIGHMagento Commerce Improper Input Validation Could Lead To Information Exposure and Privilege EscalationEPSS 2.2%CVE-2019-1843HIGHCisco RV110W, RV130W, and RV215W Routers Management Interface Denial of Service VulnerabilityEPSS 2.2%CVE-2020-15098HIGHMissing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMSEPSS 2.2%CVE-2018-0113—A vulnerability in an operations script of Cisco UCS Central could allow an authenticated, remote attacker to execute arbitrary shell commanEPSS 2.2%CVE-2023-20009MEDIUMA vulnerability in the Web UI and administrative CLI of the Cisco Secure Email Gateway (ESA) and Cisco Secure Email and Web Manager (SMA) coEPSS 2.2%CVE-2024-3177LOWBypassing mountable secrets policy imposed by the ServiceAccount admission pluginEPSS 2.2%CVE-2023-46851—Apache Allura: sensitive information exposure via importEPSS 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-2021-3482—A flaw was found in Exiv2 in versions before and including 0.27.4-RC1. Improper input validation of the rawData.size property in Jp2Image::rEPSS 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-2023-36697MEDIUMMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.2%