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-2022-25735HIGHNull Pointer Dereference in MODEMEPSS 0.4%CVE-2026-100895MEDIUMTrusted Domain Project OpenARC libopenarc arc-canon.c arc_parse_canon_t null pointer dereferenceEPSS 0.4%CVE-2025-65493HIGHNULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLSEPSS 0.4%CVE-2026-44316HIGHfree5GC: PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereferenceEPSS 0.4%CVE-2025-23100HIGHAn issue was discovered in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400. The absence of a NULL check leads to a Denial of SeEPSS 0.4%CVE-2026-93312MEDIUMFreedesktop Poppler JBIG2Stream.cc rewind null pointer dereferenceEPSS 0.4%CVE-2025-62609MEDIUMMLX has Wild Pointer Dereference in load_gguf()EPSS 0.4%CVE-2022-47021HIGHA null pointer dereference issue was discovered in functions op_get_data and op_open1 in opusfile.c in xiph opusfile 0.9 thru 0.12 allows atEPSS 0.4%CVE-2025-62466HIGHWindows Client-Side Caching Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-82055HIGHNull Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of ServiceEPSS 0.4%CVE-2026-55401MEDIUMCVE-2026-55401 is a null dereference vulnerability on the load-balancing sub-system of Secure Access servers prior to 14.57. Attackers can EPSS 0.4%CVE-2026-18699MEDIUMImproper Input Validation in MongoDB Query Planner Leads to Denial of ServiceEPSS 0.4%CVE-2026-32134MEDIUMNanoMQ: NULL Pointer Dereference Crash in tcptran_pipe_peer During Session RestoreEPSS 0.4%CVE-2026-40413HIGHWindows TCP/IP Denial of Service VulnerabilityEPSS 0.4%CVE-2026-86134HIGHFireware OS Pre-Authentication NULL Pointer Dereference Allows Remote Denial of ServiceEPSS 0.4%CVE-2021-4158—A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crEPSS 0.4%CVE-2026-8723MEDIUMqs.stringify crashes on null/undefined entries in comma-format arrays under encodeValuesOnlyEPSS 0.4%CVE-2025-32787LOWSoftEtherVPN Affected by NULL dereference in DeleteIPv6DefaultRouterInRAEPSS 0.4%CVE-2026-40195HIGHIncus nil-pointer dereference in storage bucket import allows denial of serviceEPSS 0.4%CVE-2026-0401MEDIUMA post-authentication NULL Pointer Dereference vulnerability in SonicOS allows a remote attacker to crash a firewall.EPSS 0.4%