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-2026-33801HIGHJunos OS and Junos OS Evolved: When a specifically malformed BGP route update is received RPD crashesEPSS 0.3%CVE-2024-39869HIGHA vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.2 SP1). Affected products allow to upload certificateEPSS 0.3%CVE-2025-59958MEDIUMJunos OS Evolved: PTX Series: When a firewall filter rejects traffic these packets are erroneously sent to the REEPSS 0.3%CVE-2026-109855HIGHundici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshakeEPSS 0.3%CVE-2026-0319MEDIUMPAN-OS: Improper Input Handling VulnerabilityEPSS 0.3%CVE-2022-45854MEDIUMAn improper check for unusual conditions in Zyxel NWA110AX firmware verisons prior to 6.50(ABTG.0)C0, which could allow a LAN attacker to caEPSS 0.3%CVE-2026-4915MEDIUMServer panic via outgoing webhook responsesEPSS 0.3%CVE-2026-87532MEDIUMImproper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictEPSS 0.3%CVE-2026-40069HIGHbsv-sdk ARC broadcaster treats INVALID/MALFORMED/ORPHAN responses as successful broadcastsEPSS 0.3%CVE-2023-28979MEDIUMJunos OS: In a 6PE scenario upon receipt of a specific IPv6 packet an integrity check failsEPSS 0.3%CVE-2023-44196MEDIUMJunos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the REEPSS 0.3%CVE-2026-57020HIGHJunos OS: QFX10000 Series: IPv6 multicast traffic received on non-IRB interfaces causes a multicast floodEPSS 0.3%CVE-2025-20761MEDIUMIn Modem, there is a possible system crash due to incorrect error handling. This could lead to remote denial of service, if a UE has connectEPSS 0.3%CVE-2026-47315MEDIUMImproper Check for Unusual or Exceptional Conditions vulnerability in Samsung Open Source Escargot allows Input Data Manipulation. This issEPSS 0.3%CVE-2026-65904LOWDOMPurify through 3.3.3 Cross-Site Scripting via IN_PLACE modeEPSS 0.3%CVE-2026-20739HIGHImproper conditions check for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow a denial of seEPSS 0.3%CVE-2025-9998MEDIUMImproper validation of packets sequencingEPSS 0.3%CVE-2026-21910HIGHJunos OS: EX4k Series, QFX5k Series: In an EVPN-VXLAN configuration link flaps cause Inter-VNI traffic dropEPSS 0.3%CVE-2026-119126LOWParse Server before 8.6.106 and 9.0.0 before 9.10.5-alpha.7 afterSave Trigger and LiveQuery Bypass via Dot Notation KeysEPSS 0.3%CVE-2026-113344HIGHImproper state validation in Performance in Google Chrome prior to 156.0.8078.47 allowed a local attacker to read memory via a local programEPSS 0.3%