Fallos del tipo CWE-476

2331 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-2022-36661MEDIUMxhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_read(). This vulnerability allows attackeEPSS 0.8%CVE-2022-42928HIGHCertain types of allocations were missing annotations that, if the Garbage Collector was in a specific state, could have lead to memory corrEPSS 0.8%CVE-2024-23080CRITICALJoda Time v2.12.5 was discovered to contain a NullPointerException via the component org.joda.time.format.PeriodFormat::wordBased(Locale). NEPSS 0.8%CVE-2020-27819—An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exEPSS 0.8%CVE-2026-70575MEDIUMWindows Schannel Denial of Service VulnerabilityEPSS 0.8%CVE-2022-42527HIGHIn cd_SsParseMsg of cd_SsCodec.c, there is a possible crash due to a missing null check. This could lead to remote denial of service with noEPSS 0.8%CVE-2024-26731MEDIUMbpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()EPSS 0.8%CVE-2025-32818HIGHA Null Pointer Dereference vulnerability in the SonicOS SSLVPN Virtual office interface allows a remote, unauthenticated attacker to crash tEPSS 0.8%CVE-2019-1010162—jsish 2.4.74 2.0474 is affected by: CWE-476: NULL Pointer Dereference. The impact is: denial of service. The component is: function Jsi_StrcEPSS 0.8%CVE-2026-73547HIGHEnvoy ext_authz: request `:path` pseudoheader dereferenced w/o null checkEPSS 0.8%CVE-2022-0890MEDIUMNULL Pointer Dereference in mruby/mrubyEPSS 0.8%CVE-2025-32913HIGHLibsoup: null pointer dereference in soup_message_headers_get_content_disposition when "filename" parameter is present, but has no value in content-disposition headerEPSS 0.8%CVE-2022-3341MEDIUMA null pointer dereference issue was discovered in 'FFmpeg' in decode_main_header() function of libavformat/nutdec.c file. The flaw occurs bEPSS 0.8%CVE-2022-1035LOWSegmentation Fault caused by MP4Box -lsr in gpac/gpacEPSS 0.8%CVE-2023-52696HIGHpowerpc/powernv: Add a null pointer check in opal_powercap_init()EPSS 0.8%CVE-2022-31077MEDIUMMalicious response from KubeEdge can crash CSI Driver controller serverEPSS 0.8%CVE-2024-36620MEDIUMmoby v25.0.0 - v26.0.2 is vulnerable to NULL Pointer Dereference via daemon/images/image_history.go.EPSS 0.8%CVE-2024-43559MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2022-23525MEDIUMHelm vulnerable to Denial of service via NULL Pointer DereferenceEPSS 0.8%CVE-2022-23526MEDIUMHelm contains Denial of service through schema fileEPSS 0.8%