Falhas do tipo CWE-20

5.439 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-2021-39252MEDIUMA crafted NTFS image can cause an out-of-bounds read in ntfs_ie_lookup in NTFS-3G < 2021.8.22.EPSS 0.4%CVE-2025-37173HIGHImproper Input Handling Vulnerability in Authenticated Configuration API Endpoint (AOS-10/AOS-8 Web UI)EPSS 0.4%CVE-2024-27241MEDIUMZoom Apps and SDKs - Improper Input ValidationEPSS 0.4%CVE-2020-1677HIGHJuniper Networks Mist Cloud UI: SAML authentication attribute elements handling vulnerability.EPSS 0.4%CVE-2026-41890MEDIUMCI4MS: Arbitrary Database Table Drop via Theme deleteProcessEPSS 0.4%CVE-2026-22255HIGHiccDEV has heap-buffer-overflow in CIccCLUT::Init() at IccProfLib/IccTagLut.cppEPSS 0.4%CVE-2017-12255—A vulnerability in the CLI of Cisco UCS Central Software could allow an authenticated, local attacker to gain shell access. The vulnerabilitEPSS 0.4%CVE-2026-15792MEDIUMPossible panic when incorrect parameters sent from frontendEPSS 0.4%CVE-2025-26477MEDIUMDell ECS version 3.8.1.4 and prior contain an Improper Input Validation vulnerability. A low privileged attacker with remote access could poEPSS 0.4%CVE-2025-59207HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2022-34146HIGHImproper input validation in WLAN HostEPSS 0.4%CVE-2023-0867MEDIUMMultiple stored and reflected Cross-site Scripting in webappEPSS 0.4%CVE-2026-25941MEDIUMFreeRDP: vuln_1_15_1 RDPGFX WIRE_TO_SURFACE_2 Out-of-Bounds ReadEPSS 0.4%CVE-2022-40502HIGHImproper input validation in WLAN HostEPSS 0.4%CVE-2021-39253MEDIUMA crafted NTFS image can cause an out-of-bounds read in ntfs_runlists_merge_i in NTFS-3G < 2021.8.22.EPSS 0.4%CVE-2026-26953MEDIUMPi-hole Web Interface has Stored HTML Injection via X-Forwarded-For Header in Active Sessions TableEPSS 0.4%CVE-2024-1854MEDIUMEssential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 4.5.1 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.4%CVE-2024-2027MEDIUMReal Media Library: Media Library Folder & File Manager <= 4.22.7 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.4%CVE-2024-3747MEDIUMBlocksy <= 2.0.39 - Authenticated (Contributor+) Stored Cross-Site Scripting via About Me blockEPSS 0.4%CVE-2024-8445MEDIUM389-ds-base: server crash while modifying `userpassword` using malformed input (incomplete fix for cve-2024-2199)EPSS 0.4%