Fallos del tipo CWE-476

2572 resultados

Desreferência de ponteiro nulo autenticada remota

A aplicação tenta acessar um objeto ou endereço de memória que não foi inicializado ou foi definido como nulo, sem verificar essa condição antes. Um atacante autenticado consegue provocar esse acesso inválido enviando dados malformados ou inesperados, causando crash ou comportamento indefinido.

Ejemplo

Um endpoint autenticado de API recebe um ID de usuário, faz uma busca no banco que retorna nulo (usuário não existe) e tenta acessar diretamente campos desse objeto nulo sem validação — resultando em erro 500 ou travamento da aplicação.

Cómo mitigar

Sempre verificar se um objeto é nulo antes de usá-lo; usar análise estática (linters, SAST) para detectar acessos potenciais a nulos; validar e tratar casos onde dados esperados podem estar ausentes, mesmo que o usuário esteja autenticado.

CVE-2024-11705CRITICAL`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segmentation fault (SEGV)EPSS 0.7%CVE-2024-36626MEDIUMIn prestashop 8.1.4, a NULL pointer dereference was identified in the math_round function within Tools.php.EPSS 0.7%CVE-2026-45084HIGHOpenSIPS: Denial of service in presence.handle_publish() from unchecked Content-Type stateEPSS 0.7%CVE-2026-75013HIGHTOTOLINK EX1200L cstecgi.cgi setWizardCfg null pointer dereferenceEPSS 0.7%CVE-2026-75012HIGHTOTOLINK EX1200L Password Configuration cstecgi.cgi setPasswordCfg null pointer dereferenceEPSS 0.7%CVE-2024-23078CRITICALJGraphT Core v1.5.2 was discovered to contain a NullPointerException via the component org.jgrapht.alg.util.ToleranceDoubleComparator::compaEPSS 0.7%CVE-2023-2840MEDIUMNULL Pointer Dereference in gpac/gpacEPSS 0.7%CVE-2023-38670MEDIUMNull pointer dereference in paddle.flipEPSS 0.7%CVE-2026-67304HIGHFreeRDP before 3.29.0 NULL Dereference via smartcard cleanupEPSS 0.7%CVE-2024-31755HIGHcJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger through the second parameter of function cJSON_SetValuesEPSS 0.6%CVE-2024-36476CRITICALRDMA/rtrs: Ensure 'ib_sge list' is accessibleEPSS 0.6%CVE-2026-40355MEDIUMIn MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a systemEPSS 0.6%CVE-2023-31129HIGHContiki-NG missing NULL pointer check in IPv6 neighbor discoveryEPSS 0.6%CVE-2023-52991HIGHnet: fix NULL pointer in skb_segment_listEPSS 0.6%CVE-2022-49065HIGHSUNRPC: Fix the svc_deferred_event trace classEPSS 0.6%CVE-2025-0312HIGHNULL Pointer Dereference in ollama/ollamaEPSS 0.6%CVE-2024-27660MEDIUMD-Link DIR-823G A1V1.0.2B05 was discovered to contain a Null-pointer dereferences in sub_41C488(). This vulnerability allows attackers to caEPSS 0.6%CVE-2024-31420MEDIUMCnv: dos through repeatedly calling vm-dump-metrics until virt handler crashesEPSS 0.6%CVE-2026-37230HIGHFlexRIC v2.0.0 crashes when the near-RT RIC receives a RIC_INDICATION message with a ran_func_id that does not exist in its registry. The loEPSS 0.6%CVE-2026-37226HIGHFlexRIC v2.0.0 crashes when the iApp receives an E42_RIC_SUBSCRIPTION_REQUEST referencing a non-existent E2 Node. The lookup function returnEPSS 0.6%