Falhas do tipo CWE-20

5.887 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-2018-7935MEDIUM There is a vulnerability in 21.328.01.00.00 version of the E5573Cs-322. Remote attackers could exploit this vulnerability to make the netwoEPSS 1.1%CVE-2026-118484MEDIUMCAI Content Credentials | Improper Input Validation (CWE-20)EPSS 1.1%CVE-2020-3217HIGHCisco IOS, IOS XE, IOS XR, and NX-OS Software One Platform Kit Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-45178MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2023-46167MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2026-105719MEDIUMMicrosoft SharePoint Server Information Disclosure VulnerabilityEPSS 1.1%CVE-2026-20224HIGHCisco Catalyst SD-WAN Manager XML External Entity Injection VulnerabilityEPSS 1.1%CVE-2025-43430MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, EPSS 1.1%CVE-2023-47003CRITICALAn issue in RedisGraph v.2.12.10 allows an attacker to execute arbitrary code and cause a denial of service via a crafted string in DataBlocEPSS 1.1%CVE-2020-3134MEDIUMCisco Email Security Appliance Zip Decompression Engine Denial of Service VulnerabilityEPSS 1.1%CVE-2023-31149CRITICALImproper Input Validation in Web InterfaceEPSS 1.1%CVE-2023-31148CRITICALImproper Input Validation in Web InterfaceEPSS 1.1%CVE-2024-35296HIGHApache Traffic Server: Invalid Accept-Encoding can force forwarding requestsEPSS 1.1%CVE-2025-64666HIGHMicrosoft Exchange Server Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2023-48310CRITICALAbility to DoS the testing infrastructure by overwriting filesEPSS 1.1%CVE-2023-34457MEDIUMMechanicalSoup vulnerable to malicious web server reading arbitrary files on client using file input inside HTML formEPSS 1.1%CVE-2021-21431HIGHImproper Input Validation in sopel-plugins.channelmgntEPSS 1.1%CVE-2024-40520HIGHSeaCMS 12.9 has a remote code execution vulnerability. The vulnerability is caused by admin_config_mark.php directly splicing and writing thEPSS 1.1%CVE-2021-20330MEDIUMSpecific replication command with malformed oplog entries can crash secondariesEPSS 1.1%CVE-2020-3542MEDIUMCisco Webex Training Unauthorized Meeting Join VulnerabilityEPSS 1.1%