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-2019-1747HIGHCisco IOS and IOS XE Software Short Message Service Denial of Service VulnerabilityEPSS 2.4%CVE-2019-1858HIGHCisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service VulnerabilityEPSS 2.4%CVE-2019-9141HIGHZoneplayer ActiveX Remote Code Execution vulnerabilityEPSS 2.4%CVE-2018-14624HIGHA vulnerability was discovered in 389-ds-base through versions 1.3.7.10, 1.3.8.8 and 1.4.0.16. The lock controlling the error log was not coEPSS 2.4%CVE-2021-36006LOWAdobe Photoshop MP4 File Parsing Uninitialized Variable Information Disclosure VulnerabilityEPSS 2.4%CVE-2018-4850—A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) EPSS 2.4%CVE-2019-10973—Quest KACE, all versions prior to version 8.0.x, 8.1.x, and 9.0.x, allows unintentional access to the appliance leveraging functions of the EPSS 2.4%CVE-2024-1355CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.4%CVE-2020-3127HIGHCisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution VulnerabilitiesEPSS 2.4%CVE-2017-6662—A vulnerability in the web-based user interface of Cisco Prime Infrastructure (PI) and Evolved Programmable Network Manager (EPNM) could allEPSS 2.4%CVE-2021-25437—Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code exeEPSS 2.4%CVE-2020-10693MEDIUMA flaw was found in Hibernate Validator version 6.1.2.Final. A bug in the message interpolation processor enables invalid EL expressions to EPSS 2.4%CVE-2025-34118HIGHLinknat VOS Manager Path Traversal File DisclosureEPSS 2.3%CVE-2026-35868CRITICALA Command Injection vulnerability exists in the bs_SetLimitCli_info function within the libshare.so library of LB-link Router AC2100_AZ3 V1.EPSS 2.3%CVE-2026-35869CRITICALA Command Injection vulnerability exists in the bs_SetLimitCli_info function within the libshare.so library of LB-link Router AC450M V4.0.0.EPSS 2.3%CVE-2024-1378CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.3%CVE-2025-32706HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 2.3%KEVCVE-2017-6763—A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacEPSS 2.3%CVE-2018-18999—WebAccess/SCADA, WebAccess/SCADA Version 8.3.2 installed on Windows 2008 R2 SP1. Lack of proper validation of user supplied input may allow EPSS 2.3%CVE-2024-20670HIGHOutlook for Windows Spoofing VulnerabilityEPSS 2.3%