Weaknesses of type CWE-476

2,329 results

Desreferência de nulo autenticada remota

A aplicação não valida corretamente se um ponteiro ou referência é nulo antes de usá-lo, permitindo que um usuário autenticado remotamente forneça entrada que causa uma desreferência de nulo. O resultado é um crash da aplicação ou, em cenários mais graves, execução de código não prevista, dependendo de como a memória é tratada.

Example

Um endpoint de API autenticada que busca um usuário por ID, mas não verifica se o resultado da busca é nulo. Um atacante autenticado fornece um ID inexistente, o código tenta acessar propriedades do resultado nulo e a aplicação falha ou se comporta de forma imprevista.

How to mitigate

Sempre validar retornos de funções que podem ser nulos antes de acessar seus membros ou métodos. Use assertions, verificações explícitas (if obj != null) ou mecanismos de linguagem como optional/Maybe types para forçar o tratamento seguro de valores nulos.

CVE-2016-9600—JasPer before version 2.0.10 is vulnerable to a null pointer dereference was found in the decoded creation of JPEG 2000 image files. A speciEPSS 1.5%CVE-2023-6356MEDIUMKernel: null pointer dereference in nvmet_tcp_build_iovecEPSS 1.5%CVE-2019-14872MEDIUMThe _dtoa_r function of the newlib libc library, prior to version 3.3.0, performs multiple memory allocations without checking their return EPSS 1.5%CVE-2022-41999HIGHA denial of service vulnerability exists in the DDS native tile reading functionality of OpenImageIO Project OpenImageIO v2.3.19.0 and v2.4.EPSS 1.4%CVE-2022-3109HIGHAn issue was discovered in the FFmpeg package, where vp3_decode_frame in libavcodec/vp3.c lacks check of the return value of av_malloc() andEPSS 1.4%CVE-2021-29241HIGHCODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).EPSS 1.4%CVE-2020-26213MEDIUMDenial of Service in telerEPSS 1.4%CVE-2021-42733MEDIUMAdobe Bridge NULL Pointer Dereference could lead to Application denial-of-serviceEPSS 1.4%CVE-2022-2085—A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. WhEPSS 1.4%CVE-2024-35960CRITICALnet/mlx5: Properly link new fs rules into the treeEPSS 1.4%CVE-2024-8495HIGHA null pointer dereference in Ivanti Connect Secure before version 22.7R2.1 and Ivanti Policy Secure before version 22.7R1.1 allows a remoteEPSS 1.4%CVE-2026-21243HIGHWindows Lightweight Directory Access Protocol (LDAP) Denial of Service VulnerabilityEPSS 1.4%CVE-2020-3517HIGHCisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service VulnerabilityEPSS 1.4%CVE-2021-40761MEDIUMAdobe After Effects NULL Pointer Dereference Application Denial of ServiceEPSS 1.4%CVE-2021-43750MEDIUMAdobe Premiere Rush NULL Pointer Dereference Local Denial-of-ServiceEPSS 1.4%CVE-2021-43748MEDIUMAdobe Premiere Rush NULL Pointer Dereference Local Denial-of-ServiceEPSS 1.4%CVE-2021-40756MEDIUMAdobe After Effects NULL Pointer Dereference Application Denial of ServiceEPSS 1.4%CVE-2021-43749MEDIUMAdobe Premiere Rush NULL Pointer Dereference Local Denial-of-ServiceEPSS 1.4%CVE-2022-2208HIGHNULL Pointer Dereference in vim/vimEPSS 1.4%CVE-2019-13542—3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server, all versions 3.5.11.0 to 3.5.15.0, allows an attacker to send crafted requests frEPSS 1.4%