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-2025-11845MEDIUMA null pointer dereference vulnerability in the certificate downloader CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(EPSS 0.9%CVE-2021-40027—The bone voice ID TA has a vulnerability in calculating the buffer length,Successful exploitation of this vulnerability may affect data confEPSS 0.9%CVE-2022-36659MEDIUMxhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_write(). This vulnerability allows attackEPSS 0.9%CVE-2022-36661MEDIUMxhyve commit dfbe09b was discovered to contain a NULL pointer dereference via the component vi_pci_read(). This vulnerability allows attackeEPSS 0.9%CVE-2024-21664MEDIUMParsing JSON serialized payload without protected field can lead to segfaultEPSS 0.9%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 0.9%CVE-2025-62848HIGHQTS, QuTS heroEPSS 0.9%CVE-2022-2980MEDIUMNULL Pointer Dereference in vim/vimEPSS 0.9%CVE-2024-20436HIGHA vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticEPSS 0.9%CVE-2023-23087CRITICALAn issue was found in MojoJson v1.2.3 allows attackers to execute arbitary code via the destroy function.EPSS 0.9%CVE-2022-44018HIGHIn Softing uaToolkit Embedded before 1.40.1, a malformed PubSub discovery announcement message can cause a NULL pointer dereference or out-oEPSS 0.9%CVE-2023-24822HIGHRIOT-OS vulnerable to Null Pointer dereference during IPHC encodingEPSS 0.9%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 0.9%CVE-2022-27497HIGHNull pointer dereference in firmware for Intel(R) AMT before version 11.8.93, 11.22.93, 11.12.93, 12.0.92, 14.1.67, 15.0.42, 16.1.25 may allEPSS 0.9%CVE-2026-18453HIGH389-ds-base: 389-ds-base: pre-authentication null pointer dereference via paged results and use_one_backend control in op_shared_searchEPSS 0.8%CVE-2021-3320MEDIUMType Confusion in 802154 ACK Frames HandlingEPSS 0.8%CVE-2024-26924HIGHnetfilter: nft_set_pipapo: do not free live elementEPSS 0.8%CVE-2023-29996HIGHIn NanoMQ v0.15.0-0, segment fault with Null Pointer Dereference occurs in the process of decoding subinfo_decode and unsubinfo_decode.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-2021-33068MEDIUMNull pointer dereference in subsystem for Intel(R) AMT before versions 15.0.35 may allow an authenticated user to potentially enable denial EPSS 0.8%