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-2025-0128HIGHPAN-OS: Firewall Denial of Service (DoS) Using a Specially Crafted PacketEPSS 0.3%CVE-2026-21689MEDIUMiccDEV has Type Confusion in CIccProfileXml::ParseBasic() at IccXML/IccLibXML/IccProfileXml.cppEPSS 0.3%CVE-2026-0321MEDIUMPAN-OS: Denial of Service (DoS) Vulnerabilities in Network ServicesEPSS 0.3%CVE-2025-43715HIGHNullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation,EPSS 0.3%CVE-2023-52534MEDIUMIn ngmm, there is a possible undefined behavior due to incorrect error handling. This could lead to remote denial of service with no additioEPSS 0.3%CVE-2025-54463MEDIUMUnexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence PluginEPSS 0.3%CVE-2026-40249MEDIUMfree5gc UDR fail-open request handling in PolicyDataSubsToNotifySubsIdPut may allow unintended subscription updates after input errorsEPSS 0.3%CVE-2024-20506MEDIUMClamAV Privilege Handling Escalation VulnerabilityEPSS 0.3%CVE-2025-22445LOWMisleading UI for undefined admin console settings in Calls causes security confusionEPSS 0.3%CVE-2026-0318MEDIUMPAN-OS: Denial of Service (DoS) on PanoramaEPSS 0.3%CVE-2026-75595CRITICALNetty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContextEPSS 0.3%CVE-2025-55035MEDIUMMattermost Desktop DoS when user has basic authentication server configuredEPSS 0.3%CVE-2026-91733HIGHImproper state validation in Skia in Google Chrome prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer processEPSS 0.3%CVE-2026-42246HIGHnet-imap vulnerable to STARTTLS stripping via invalid response timingEPSS 0.3%CVE-2024-10635MEDIUMEnterprise Protection S/MIME Opaque Signature Attachment Scanning BypassEPSS 0.3%CVE-2026-107275MEDIUM@fastify/jwt vulnerable to missing token expiration when temporal options cannot be parsedEPSS 0.3%CVE-2025-53514MEDIUMUnexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence PluginEPSS 0.3%CVE-2025-14840HIGHHTTP Client Manager - Less critical - Information disclosure - SA-CONTRIB-2025-126EPSS 0.3%CVE-2024-39561MEDIUMJunos OS: SRX4600, SRX5000 Series: TCP packets with SYN/FIN or SYN/RST are transferred after enabling no-syn-check with Express PathEPSS 0.3%CVE-2021-29544LOWCHECK-fail in `QuantizeAndDequantizeV4Grad`EPSS 0.3%