Fallos del tipo CWE-20

5887 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

CVE-2024-38052HIGHKernel Streaming WOW Thunk Service Driver Elevation of Privilege VulnerabilityEPSS 7.0%CVE-2022-3140—Macro URL arbitrary script executionEPSS 7.0%CVE-2018-0159HIGHA vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE SoftwaEPSS 6.9%KEVCVE-2017-3792—A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unaEPSS 6.8%CVE-2023-28274HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 6.8%CVE-2023-36049HIGH.NET, .NET Framework, and Visual Studio Elevation of Privilege VulnerabilityEPSS 6.8%CVE-2025-14156CRITICALFox LMS – WordPress LMS Plugin 1.0.4.7 - 1.0.5.1 - Unauthenticated Privilege Escalation via 'createOrder'EPSS 6.8%CVE-2018-0253—A vulnerability in the ACS Report component of Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to eEPSS 6.7%CVE-2025-14558HIGHRemote code execution via ND6 Router AdvertisementsEPSS 6.7%CVE-2023-36731HIGHWin32k Elevation of Privilege VulnerabilityEPSS 6.6%CVE-2024-26170HIGHWindows Composite Image File System (CimFS) Elevation of Privilege VulnerabilityEPSS 6.6%CVE-2020-10885HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1EPSS 6.5%CVE-2018-16875MEDIUMThe crypto/x509 package of Go before 1.10.6 and 1.11.x before 1.11.3 does not limit the amount of work performed for each chain verificationEPSS 6.5%CVE-2022-26531MEDIUMMultiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71EPSS 6.4%CVE-2024-56132HIGHImproper Input Validation vulnerability of Authenticated User in Progress LoadMaster allows : OS Command Injection.EPSS 6.3%CVE-2021-22924LOWlibcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errEPSS 6.3%CVE-2016-8624MEDIUMcurl before version 7.51.0 doesn't parse the authority component of the URL correctly when the host name part ends with a '#' character, andEPSS 6.3%CVE-2020-14343—A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it proEPSS 6.2%CVE-2024-38244HIGHKernel Streaming Service Driver Elevation of Privilege VulnerabilityEPSS 6.2%CVE-2016-7072MEDIUMAn issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a deniEPSS 6.2%