Weaknesses of type CWE-476

2,578 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-2023-40459HIGHImproper input leads to DoSEPSS 2.3%CVE-2018-10914MEDIUMIt was found that an attacker could issue a xattr request via glusterfs FUSE to cause gluster brick process to crash which will result in a EPSS 2.3%CVE-2016-8626MEDIUMA flaw was found in Red Hat Ceph before 0.94.9-8. The way Ceph Object Gateway handles POST object requests permits an authenticated attackerEPSS 2.3%CVE-2011-1985HIGHwin32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SEPSS 2.3%CVE-2023-26463CRITICALstrongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes witEPSS 2.3%CVE-2020-13575HIGHA denial-of-service vulnerability exists in the WS-Addressing plugin functionality of Genivia gSOAP 2.8.107. A specially crafted SOAP requesEPSS 2.2%CVE-2018-16852MEDIUMSamba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the EPSS 2.2%CVE-2023-21586MEDIUMAcrobat Reader | NULL Pointer Dereference (CWE-476)EPSS 2.2%CVE-2020-8569MEDIUMKubernetes CSI snapshot-controller DoSEPSS 2.2%CVE-2021-39853MEDIUMAdobe Acrobat Reader DC Null Pointer Dereference Could Lead To Application Denial-of-ServiceEPSS 2.2%CVE-2018-0305—A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remotEPSS 2.2%CVE-2016-9572MEDIUMA NULL pointer dereference flaw was found in the way openjpeg 2.1.2 decoded certain input images. Due to a logic error in the code responsibEPSS 2.2%CVE-2024-26183MEDIUMWindows Kerberos Denial of Service VulnerabilityEPSS 2.2%CVE-2024-38072HIGHWindows Remote Desktop Licensing Service Denial of Service VulnerabilityEPSS 2.2%CVE-1999-0052HIGHIP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.EPSS 2.1%CVE-2025-60335HIGHA NULL pointer dereference in the main function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoSEPSS 2.1%CVE-2021-3671—A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). EPSS 2.1%CVE-2019-14847MEDIUMA flaw was found in samba 4.0.0 before samba 4.9.15 and samba 4.10.x before 4.10.10. An attacker can crash AD DC LDAP server via dirsync resEPSS 2.1%CVE-2020-26235MEDIUMSegmentation fault in Rust time crateEPSS 2.1%CVE-2024-21356MEDIUMWindows Lightweight Directory Access Protocol (LDAP) Denial of Service VulnerabilityEPSS 2.1%