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-2026-29169HIGHApache HTTP Server: mod_dav_lock indirect lock crashEPSS 0.6%CVE-2025-8183HIGHNULL Pointer Dereference in µD3TNEPSS 0.6%CVE-2026-112392HIGHPillow: NULL dereference in ImagingExpand via rank filters on zero-size imagesEPSS 0.6%CVE-2025-69252MEDIUMfree5GC has Null Pointer Dereference in UDM, Leading to Service PanicEPSS 0.6%CVE-2023-33307MEDIUMA null pointer dereference in Fortinet FortiOS before 7.2.5 and before 7.0.11, FortiProxy before 7.2.3 and before 7.0.9 allows attacker to dEPSS 0.6%CVE-2024-44856HIGHOpen Robotics Robotic Operating System 2 ROS2 navigation2 v.humble was discovered to contain a NULL pointer dereference via the component naEPSS 0.6%CVE-2024-44855HIGHOpen Robotics Robotic Operating System 2 ROS2 navigation2 v.humble was discovered to contain a NULL pointer dereference via the component naEPSS 0.6%CVE-2024-44854HIGHOpen Robotics Robotic Operating System 2 ROS2 navigation2 v.humble was discovered to contain a NULL pointer dereference via the component smEPSS 0.6%CVE-2024-44853HIGHOpen Robotics Robotic Operating System 2 ROS2 navigation2 v.humble was discovered to contain a NULL pointer dereference via the component coEPSS 0.6%CVE-2026-72035HIGHnet/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peekedEPSS 0.6%CVE-2026-43441HIGHnet: bonding: Fix nd_tbl NULL dereference when IPv6 is disabledEPSS 0.6%CVE-2025-59836MEDIUMOmni is Vulnerable to DoS via Empty Create/Update Resource RequestsEPSS 0.6%CVE-2024-42491MEDIUMA malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is usedEPSS 0.6%CVE-2026-82821MEDIUMFLVMeta AMF Object Parsing amf.c amf_object_get null pointer dereferenceEPSS 0.6%CVE-2026-52998HIGHnetfilter: nfnetlink_osf: fix potential NULL dereference in ttl checkEPSS 0.6%CVE-2024-0209HIGHNULL Pointer Dereference in WiresharkEPSS 0.6%CVE-2026-64545HIGHnet, bpf: check master for NULL in xdp_master_redirect()EPSS 0.6%CVE-2024-46922HIGHAn issue was discovered in Samsung Mobile Processor Exynos 1480 and 2400. The absence of a null check leads to a Denial of Service at amdgpuEPSS 0.6%CVE-2023-6603HIGHFfmpeg: null pointer dereference in ffmpeg hls parsingEPSS 0.6%CVE-2026-20221MEDIUMMultiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service VulnerabilitiesEPSS 0.6%