Weaknesses of type CWE-20

5,391 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-2022-35668MEDIUMAdobe Acrobat Reader Improper Input Validation Memory leakEPSS 4.1%CVE-2023-34111HIGHCommand Injection Vulnerability in `Release PR Merged` Workflow in taosdata/grafanapluginEPSS 4.0%CVE-2018-0378HIGHCisco NX-OS Software for Nexus 5500, 5600, and 6000 Series Switches Precision Time Protocol Denial of Service VulnerabilityEPSS 4.0%CVE-2021-1141CRITICALCisco Smart Software Manager Satellite Web UI Command Injection VulnerabilitiesEPSS 4.0%CVE-2021-1139CRITICALCisco Smart Software Manager Satellite Web UI Command Injection VulnerabilitiesEPSS 4.0%CVE-2018-0313—A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, remote attacker to send a malicious packet to thEPSS 3.9%CVE-2024-30040HIGHWindows MSHTML Platform Security Feature Bypass VulnerabilityEPSS 3.9%KEVCVE-2018-0274—A vulnerability in the CLI parser of Cisco Network Services Orchestrator (NSO) could allow an authenticated, remote attacker to execute arbiEPSS 3.9%CVE-2022-21668HIGHPipenv's requirements.txt parsing allows malicious index url in commentsEPSS 3.9%CVE-2026-47668CRITICALDbGate: Unauthenticated Remote Code Execution via JSON Script RunnerEPSS 3.9%CVE-2020-11008MEDIUMMalicious URLs can still cause Git to send a stored credential to the wrong serverEPSS 3.9%CVE-2016-9577HIGHA vulnerability was discovered in SPICE before 0.13.90 in the server's protocol handling. An authenticated attacker could send crafted messaEPSS 3.8%CVE-2018-8850—Philips e-Alert Unit (non-medical device), Version R2.1 and prior. The software does not validate input properly, allowing an attacker to crEPSS 3.8%CVE-2018-0234—A vulnerability in the implementation of Point-to-Point Tunneling Protocol (PPTP) functionality in Cisco Aironet 1810, 1830, and 1850 SeriesEPSS 3.8%CVE-2018-0467—Cisco IOS and IOS XE Software IPv6 Hop-by-Hop Options Denial of Service VulnerabilityEPSS 3.8%CVE-2017-12277—A vulnerability in the Smart Licensing Manager service of the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300EPSS 3.8%CVE-2023-41061HIGHA validation issue was addressed with improved logic. This issue is fixed in watchOS 9.6.2, iOS 16.6.1 and iPadOS 16.6.1. A maliciously crafEPSS 3.8%KEVCVE-2018-0104—A vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow a remote attacker to execute aEPSS 3.8%CVE-2019-1753HIGHCisco IOS XE Software Privilege Escalation VulnerabilityEPSS 3.8%CVE-2018-0287—A vulnerability in the Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow an unauthenticated, remoteEPSS 3.8%