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-2022-31076MEDIUMMalicious Message can crash CloudCore in KubeEdgeEPSS 0.6%CVE-2024-22099MEDIUMNULL pointer deference in rfcomm_check_security in Linux kernelEPSS 0.6%CVE-2024-8454MEDIUMPLANET Technology switch devices - Swctrl service DoS attackEPSS 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-2020-18378MEDIUMA NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm iEPSS 0.6%CVE-2026-38976HIGHmrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_SUPER due to a missing runtime guard forEPSS 0.6%CVE-2026-15352HIGHNASA Core Flight System (cFS) Health & Safety (HS) Application NULL Pointer DereferenceEPSS 0.6%CVE-2025-21844HIGHsmb: client: Add check for next_buffer in receive_encrypted_standard()EPSS 0.6%CVE-2024-22733LOWTP Link MR200 V4 Firmware version 210201 was discovered to contain a null-pointer-dereference in the web administration panel on /cgi/login EPSS 0.6%CVE-2025-59537HIGHargo-cd is vulnerable to unauthenticated DoS attack via malformed Gogs webhook payloadEPSS 0.6%CVE-2025-3122LOWWebAssembly wabt binary-reader-interp.cc BeginFunctionBody null pointer dereferenceEPSS 0.6%CVE-2024-37045MEDIUMQTS, QuTS heroEPSS 0.6%CVE-2024-37042MEDIUMQTS, QuTS heroEPSS 0.6%CVE-2025-61106HIGHFRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at EPSS 0.6%CVE-2025-61104HIGHFRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_unknown_tlv function at ospf_eEPSS 0.6%CVE-2025-61107HIGHFRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at EPSS 0.6%CVE-2025-61103HIGHFRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_lan_adj_sid function EPSS 0.6%CVE-2026-29169HIGHApache HTTP Server: mod_dav_lock indirect lock crashEPSS 0.6%CVE-2026-77901HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-25475HIGHA NULL pointer dereference in the component /libsrc/dcrleccd.cc of DCMTK v3.6.9+ DEV allows attackers to cause a Denial of Service (DoS) viaEPSS 0.6%