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-2023-41304—Parameter verification vulnerability in the window module.Successful exploitation of this vulnerability may cause the size of an app window EPSS 0.3%CVE-2024-20089HIGHIn wlan, there is a possible denial of service due to incorrect error handling. This could lead to remote denial of service with no additionEPSS 0.3%CVE-2022-22238MEDIUMJunos OS and Junos OS Evolved: The rpd process will crash when a malformed incoming RESV message is processedEPSS 0.3%CVE-2025-52136LOWIn EMQX before 5.8.6, administrators can install arbitrary novel plugins via the Dashboard web interface. NOTE: the Supplier's position is tEPSS 0.3%CVE-2023-28974HIGHJunos OS: MX Series: In a BBE scenario upon receipt of specific malformed packets from subscribers the process bbe-smgd will crashEPSS 0.3%CVE-2026-104432MEDIUMZebra before 6.3.0 False Readiness via Discarded One-Hash FindBlocks ResponseEPSS 0.3%CVE-2025-71412HIGHIn CPDLC, False Emergency or Status Messages Will be Accepted as LegitimateEPSS 0.3%CVE-2026-40094MEDIUMnimiq-blockchain: network-libp2p untrusted peer can crash address book via empty peer contact addressesEPSS 0.3%CVE-2026-3109LOWMissing timestamp validation in Zoom webhook handlerEPSS 0.3%CVE-2025-24161MEDIUMThe issue was addressed with improved checks. This issue is fixed in iOS 18.3 and iPadOS 18.3, iPadOS 17.7.4, macOS Sequoia 15.3, macOS SonoEPSS 0.3%CVE-2026-0317LOWPAN-OS: Denial of Service VulnerabilityEPSS 0.3%CVE-2023-21405MEDIUMDenial-of-Service vulnerability in Axis Network Door Controller's and Axis Network Intercom's OSDP communicationEPSS 0.3%CVE-2025-15542MEDIUMDenial of Service (DoS) of VoIP Communication on TP-Link VX800vEPSS 0.3%CVE-2025-66357MEDIUMCHOCO TEI WATCHER mini (IB-MCT001) contains an issue with improper check for unusual or exceptional conditions. When the Video Download featEPSS 0.3%CVE-2024-47507MEDIUMJunos OS and Junos OS Evolved: BGP update message containing aggregator attribute with an ASN value of zero (0) is acceptedEPSS 0.3%CVE-2024-42411MEDIUMUser creation date manipulation in POST /api/v4/usersEPSS 0.3%CVE-2025-62605MEDIUMMastodon quotes control can be bypassedEPSS 0.3%CVE-2026-41662MEDIUMAdmidio: Missing Minimum Administrator Check in Role Membership RemovalEPSS 0.3%CVE-2024-44235MEDIUMThe issue was addressed with improved checks. This issue is fixed in iOS 18.1 and iPadOS 18.1. An attacker may be able to view restricted coEPSS 0.3%CVE-2026-20747HIGHImproper conditions check for some Intel(R) PROSet/Wireless WiFi Software within Ring 2: Device Drivers may allow a denial of service. NetwoEPSS 0.3%