Fallos del tipo CWE-20

5418 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-2018-0303—A vulnerability in the Cisco Discovery Protocol component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adEPSS 1.1%CVE-2022-39346LOWMissing length validation of user displayname in nextcloud serverEPSS 1.1%CVE-2020-3546MEDIUMCisco Email Security Appliance Information Disclosure VulnerabilityEPSS 1.1%CVE-2019-16029HIGHCisco Smart Software Manager On-Prem Web Interface Denial of Service VulnerabilityEPSS 1.1%CVE-2020-8102HIGHInsufficient URL sanitization and validation in Safepay Browser (VA-8631)EPSS 1.1%CVE-2021-1470MEDIUMCisco SD-WAN SQL Injection VulnerabilityEPSS 1.1%CVE-2022-2385HIGHAccessKeyID validation bypassEPSS 1.1%CVE-2021-1534MEDIUMCisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 1.1%CVE-2025-58364MEDIUMcups: Remote DoS via null dereferenceEPSS 1.1%CVE-2020-29507MEDIUMDell BSAFE Crypto-C Micro Edition, versions before 4.1.4, and Dell BSAFE Micro Edition Suite, versions before 4.4, contain an Improper InputEPSS 1.1%CVE-2022-39389HIGHWitness Block Parsing DoS Vulnerability in lndEPSS 1.1%CVE-2023-22460HIGHgo-ipld-prime json codec may panic if asked to encode bytesEPSS 1.1%CVE-2022-22538—When a user opens a manipulated Adobe Illustrator file format (.ai, ai.x3d) received from untrusted sources in SAP 3D Visual Enterprise ViewEPSS 1.1%CVE-2026-18911HIGHManageEngine DataSecurity Plus versions before 6310 are vulnerable to an agent authentication bypass, allowing unenrolled agents to send reqEPSS 1.1%CVE-2021-27420MEDIUMGE UR family input validationEPSS 1.1%CVE-2024-26240HIGHSecure Boot Security Feature Bypass VulnerabilityEPSS 1.1%CVE-2022-32797HIGHThis issue was addressed with improved checks. This issue is fixed in Security Update 2022-005 Catalina, macOS Big Sur 11.6.8, macOS MontereEPSS 1.1%CVE-2026-20967HIGHSystem Center Operations Manager (SCOM) Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2021-22288HIGHSECURITY – Denial of Service Vulnerabilities in SPIET800 INFI-Net to Ethernet Transfer module and PNI800 S+ Ethernet communication interface moduleEPSS 1.1%CVE-2021-22286HIGHSECURITY – Denial of Service Vulnerabilities in SPIET800 INFI-Net to Ethernet Transfer module and PNI800 S+ Ethernet communication interface moduleEPSS 1.1%