Falhas do tipo CWE-20

5.387 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-2016-9606—JBoss RESTEasy before version 3.1.2 could be forced into parsing a request with YamlProvider, resulting in unmarshalling of potentially untrEPSS 5.9%CVE-2018-0314—A vulnerability in the Cisco Fabric Services (CFS) component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated,EPSS 5.9%CVE-2023-45648MEDIUMApache Tomcat: Trailer header parsing too lenientEPSS 5.8%CVE-2021-34994HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authEPSS 5.8%CVE-2020-3110HIGHCisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execution and Denial of Service VulnerabilityEPSS 5.7%CVE-2022-3140—Macro URL arbitrary script executionEPSS 5.7%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 5.7%CVE-2022-39291MEDIUMDenial of service through logs in zoneminderEPSS 5.6%CVE-2020-26146MEDIUMAn issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consEPSS 5.6%CVE-2018-0308—A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remotEPSS 5.6%CVE-2018-0312—A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remotEPSS 5.6%CVE-2017-7522—OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificaEPSS 5.5%CVE-2020-15180—A flaw was found in the mysql-wsrep component of mariadb. Lack of input sanitization in `wsrep_sst_method` allows for command injection thatEPSS 5.5%CVE-2020-1747CRITICALA vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it pEPSS 5.4%CVE-2025-54248HIGHAdobe Experience Manager | Improper Input Validation (CWE-20)EPSS 5.4%CVE-2019-1862HIGHCisco IOS XE Software Web UI Command Injection VulnerabilityEPSS 5.4%CVE-2023-29371HIGHWindows GDI Elevation of Privilege VulnerabilityEPSS 5.4%CVE-2024-45431MEDIUMOpenSynergy BlueSDK (aka Blue SDK) through 6.x has Improper Input Validation. The specific flaw exists within the BlueSDK Bluetooth stack. TEPSS 5.4%CVE-2020-3252CRITICALMultiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big DataEPSS 5.3%CVE-2017-12319MEDIUMA vulnerability in the Border Gateway Protocol (BGP) over an Ethernet Virtual Private Network (EVPN) for Cisco IOS XE Software could allow aEPSS 5.2%KEV