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-2022-30789MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2022-30786MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2023-39381— Input verification vulnerability in the storage module. Successful exploitation of this vulnerability may cause the device to restart.EPSS 0.4%CVE-2024-43373HIGHwebcrack has an Arbitrary File Write Vulnerability on Windows when Parsing and Saving a Malicious BundleEPSS 0.4%CVE-2025-59028MEDIUMWhen sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to faiEPSS 0.4%CVE-2023-39390—Vulnerability of input parameter verification in certain APIs in the window management module. Successful exploitation of this vulnerabilityEPSS 0.4%CVE-2026-13341HIGHPrompt Injection and Credential Exposure via Untrusted Analytics Data in Kong Konnect MCPEPSS 0.4%CVE-2023-20132MEDIUMCisco Webex Meetings Web UI VulnerabilitiesEPSS 0.4%CVE-2026-23836CRITICALHotCRP vulnerable to remote code execution through formulasEPSS 0.4%CVE-2026-33894HIGHForge has signature forgery in RSA-PKCS due to ASN.1 extra fieldEPSS 0.4%CVE-2025-11958MEDIUMAn improper input validation in the Security Dashboard ignored-tasks API of Devolutions Server 2025.2.15.0 and earlier allows an authenticatEPSS 0.4%CVE-2026-53600MEDIUMasync-tar PAX extension-header desync enables tar entry/content smugglingEPSS 0.4%CVE-2026-54199MEDIUMTeamDavid: Header Injection through request body in link storing functionalityEPSS 0.4%CVE-2025-0424MEDIUMMultiple Authenticated Stored Cross-Site ScriptingEPSS 0.4%CVE-2026-12246HIGHOut of bounds stack write with crafted APL RREPSS 0.4%CVE-2022-22384MEDIUMIBM Security Verify Privilege improper input validationEPSS 0.4%CVE-2023-26273MEDIUMIBM QRadar security bypassEPSS 0.4%CVE-2019-1839MEDIUMCisco Remote PHY Device Software Command Injection VulnerabilityEPSS 0.4%CVE-2025-57528HIGHAn issue was discovered in Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01 allowing attackers to cause a denial of service via the funcname, EPSS 0.4%CVE-2026-16117CRITICAL@fastify/http-proxy vulnerable to prefix escape via URL-encoded charactersEPSS 0.4%