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-2017-2586LOWA null pointer dereference vulnerability was found in netpbm before 10.61. A maliciously crafted SVG file could cause the application to craEPSS 1.2%CVE-2026-42764HIGHNULL Pointer Dereference in QUIC Server Initial Packet HandlingEPSS 1.2%CVE-2024-50318HIGHA null pointer dereference in Ivanti Avalanche before 6.4.6 allows a remote unauthenticated attacker to cause a denial of service.EPSS 1.2%CVE-2024-50317HIGHA null pointer dereference in Ivanti Avalanche before 6.4.6 allows a remote unauthenticated attacker to cause a denial of service.EPSS 1.2%CVE-2020-35495—There's a flaw in binutils /bfd/pef.c. An attacker who is able to submit a crafted input file to be processed by the objdump program could cEPSS 1.2%CVE-2026-69744HIGHWindows Kerberos Denial of Service VulnerabilityEPSS 1.1%CVE-2021-40785MEDIUMAdobe Premiere Elements Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-40796MEDIUMAdobe Premiere Pro Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-40789MEDIUMAdobe Premiere Elements Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-40762MEDIUMAdobe Character Animator NULL Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-42263MEDIUMAdobe Premiere Pro Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-40768MEDIUMAdobe Character Animator NULL Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-40788MEDIUMAdobe Premiere Elements Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2021-42264MEDIUMAdobe Premiere Pro Null Pointer Dereference Application denial-of-serviceEPSS 1.1%CVE-2022-24810MEDIUMnet-snmp: A malformed OID in a SET to the nsVacmAccessTable can cause a NULL pointer dereference.EPSS 1.1%CVE-2020-1995MEDIUMPAN-OS: Management server rasmgr denial of serviceEPSS 1.1%CVE-2020-35496—There's a flaw in bfd_pef_scan_start_address() of bfd/pef.c in binutils which could allow an attacker who is able to submit a crafted file tEPSS 1.1%CVE-2026-72939MEDIUMWindows Routing and Remote Access Service (RRAS) Denial of Service VulnerabilityEPSS 1.1%CVE-2026-50366MEDIUMWindows Active Directory Domain Services Denial of Service VulnerabilityEPSS 1.1%CVE-2026-57976MEDIUMWindows Active Directory Domain Services Denial of Service VulnerabilityEPSS 1.1%