Falhas do tipo CWE-754

508 resultados

Falta de validação de condições excepcionais

A fraqueza ocorre quando o software não valida ou valida incorretamente situações anômalas que raramente acontecem durante a operação normal. O desenvolvedor assume que certas condições 'nunca vão acontecer', deixando o código vulnerável quando elas de fato ocorrem — seja por entrada malformada, estado corrompido ou cenários edge case não previstos.

Exemplo

Um parser JSON que só testa o caminho feliz: carrega e processa um JSON válido, mas quando recebe um arquivo com caracteres especiais, tamanho excepcional ou estrutura quebrada, falha silenciosamente ou causa comportamento indefinido em vez de rejeitar explicitamente o entrada inválida.

Como mitigar

Sempre validar entradas e estados, não presumir cenários 'impossíveis': use try-catch, verificações de limites, e testes que explorem casos anormais (fuzzing, boundary testing). Falhe de forma segura e explícita — nunca em silêncio.

CVE-2019-6833MEDIUMA CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTEPSS 1.0%CVE-2026-31790HIGHIncorrect Failure Handling in RSA KEM RSASVE EncapsulationEPSS 1.0%CVE-2021-31361MEDIUMJunos OS: QFX Series and PTX Series: FPC resource usage increases when certain packets are processed which are being VXLAN encapsulatedEPSS 1.0%CVE-2024-22422HIGHUnauthenticated Denial of Service (DOS) attack in AnythingLLMEPSS 1.0%CVE-2021-22285HIGHSECURITY – Denial of Service Vulnerabilities in SPIET800 INFI-Net to Ethernet Transfer module and PNI800 S+ Ethernet communication interface moduleEPSS 1.0%CVE-2022-20837HIGHCisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service VulnerabilityEPSS 1.0%CVE-2021-31351HIGHJunos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card resetEPSS 1.0%CVE-2022-22194HIGHJunos OS Evolved: PTX series: An attacker sending a crafted GRE packet will cause the PFE to restartEPSS 1.0%CVE-2022-23572MEDIUMCrash when type cannot be specialized in TensorflowEPSS 1.0%CVE-2022-24321—A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause Denial of Service against the Geo SCADEPSS 1.0%CVE-2021-42020HIGHA vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i800NC, RUGGEDCOM i801, RUGGEDCOM i801NC, RUGGEDCOM i802, RUGGEDCOM i802NC,EPSS 1.0%CVE-2022-23590MEDIUMCrash due to erroneous `StatusOr` in TensorflowEPSS 1.0%CVE-2022-22185HIGHJunos OS: SRX Series: Denial of service vulnerability in flowd daemon upon receipt of a specific fragmented packetEPSS 1.0%CVE-2025-33201HIGHNVIDIA Triton Inference Server contains a vulnerability where an attacker may cause an improper check for unusual or exceptional conditions EPSS 1.0%CVE-2023-34449MEDIUMink! vulnerable to incorrect decoding of storage value when using `DelegateCall`EPSS 1.0%CVE-2023-37303—An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to block a user fails aftEPSS 1.0%CVE-2021-0282HIGHJunos OS: RPD crash while processing a specific BGP UPDATE when Multipath or add-path features are enabledEPSS 0.9%CVE-2023-48696MEDIUMAzure RTOS USBX Remote Code Execution VulnerabilityEPSS 0.9%CVE-2022-26078HIGHGallagher Controller 6000 is vulnerable to a Denial of Service attack via conflicting ARP packets with a duplicate IP address. This issue afEPSS 0.9%CVE-2023-48698MEDIUMAzure RTOS USBX Remote Code Execution VulnerabilityEPSS 0.9%