Fallos del tipo CWE-754

461 resultados

Falta de verificação de condições excepcionais

O software não valida ou valida incorretamente situações anormais que raramente ocorrem no operação rotineira, deixando o código vulnerável quando essas condições inesperadas acontecem. Isso causa comportamento indefinido, crash ou exploração, porque o desenvolvedor assumiu que 'isso nunca vai acontecer' sem proteção.

Ejemplo

Um parser de arquivo de imagem assume que o header sempre terá exatamente 256 bytes sem checar o tamanho real; quando recebe um arquivo malformado com header menor, acessa memória além do esperado causando leitura fora de limites ou corrupção.

Cómo mitigar

Valide explicitamente todas as entradas e estados críticos, mesmo aqueles aparentemente impossíveis: use asserções em desenvolvimento, trate exceções esperadas e adicione limites de segurança (timeouts, limites de tamanho). Teste com entradas malformadas e corner cases, não apenas fluxo feliz.

CVE-2023-44199HIGHJunos OS: MX Series: In a PTP scenario a prolonged routing protocol churn can trigger an FPC rebootEPSS 0.5%CVE-2023-45922MEDIUMglx_pbuffer.c in Mesa 23.0.4 was discovered to contain a segmentation violation when calling __glXGetDrawableAttribute(). NOTE: this is dispEPSS 0.5%CVE-2025-13392HIGHImproper check for unusual or exceptional conditions vulnerability in SSO in Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3EPSS 0.5%CVE-2026-0229MEDIUMPAN-OS: Denial of Service in Advanced DNS Security FeatureEPSS 0.5%CVE-2026-22796MEDIUMASN1_TYPE Type Confusion in the PKCS7_digest_from_attributes() functionEPSS 0.5%CVE-2024-30402HIGHJunos OS and Junos OS Evolved: The l2ald crashes on receiving telemetry messages from a specific subscriptionEPSS 0.5%CVE-2024-9124HIGHRockwell Automation PowerFlex 6000T CIP Security denial-of-service VulnerabilityEPSS 0.5%CVE-2025-24975HIGHFirebird Non-Authorized Access to Encrypted Database Using Execute Statement on ExternalEPSS 0.5%CVE-2023-44099—Vulnerability of data verification errors in the kernel module. Successful exploitation of this vulnerability may cause WLAN interruption.EPSS 0.5%CVE-2023-46765HIGHVulnerability of uncaught exceptions in the NFC module. Successful exploitation of this vulnerability can affect NFC availability.EPSS 0.5%CVE-2026-33151HIGHsocket.io allows an unbounded number of binary attachmentsEPSS 0.5%CVE-2023-5967MEDIUMDenial of Service via crashing the Calls PluginEPSS 0.5%CVE-2024-21603MEDIUMJunos OS: MX Series: Gathering statistics in a scaled SCU/DCU configuration will lead to a device crashEPSS 0.5%CVE-2026-56812MEDIUMPhoenix JavaScript presence client crashes on presence keys colliding with Object.prototype members in Presence.syncState/syncDiffEPSS 0.5%CVE-2026-69185HIGHSocket.IO: Zero-attachment Memory ExhaustionEPSS 0.5%CVE-2024-21586HIGHJunos OS: SRX Series and NFX Series: Specific valid traffic leads to a PFE crashEPSS 0.5%CVE-2021-44856MEDIUMAn issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be crEPSS 0.5%CVE-2021-33139MEDIUMImproper conditions check in firmware for some Intel(R) Wireless Bluetooth(R) and Killer(TM) Bluetooth(R) products before version 22.100 mayEPSS 0.5%CVE-2024-39540HIGHJunos OS: SRX Series, and MX Series with SPC3: Specific valid TCP traffic can cause a pfe crashEPSS 0.5%CVE-2024-39545HIGHJunos OS: SRX Series, MX Series with SPC3 and NFX350: When VPN tunnels parameters are not configured in specific way the iked process will crashEPSS 0.5%