Fallos del tipo CWE-416

5038 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2021-34879HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46633HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-34919HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46613HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2022-28837MEDIUMAdobe Acrobat Pro DC Doc buttonSetIcon Use-After-Free Information Disclosure VulnerabilityEPSS 2.0%CVE-2023-46850—Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending netEPSS 2.0%CVE-2018-8843—Rockwell Automation Arena versions 15.10.00 and prior contains a use after free vulnerability caused by processing specially crafted Arena SEPSS 2.0%CVE-2021-3516—There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint cEPSS 2.0%CVE-2023-29330HIGHMicrosoft Teams Remote Code Execution VulnerabilityEPSS 2.0%CVE-2023-36787HIGHMicrosoft Edge (Chromium-based) Elevation of Privilege VulnerabilityEPSS 2.0%CVE-2025-48004HIGHMicrosoft Brokering File System Elevation of Privilege VulnerabilityEPSS 2.0%CVE-2024-21307HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 2.0%CVE-2019-3885LOWA use-after-free flaw was found in pacemaker up to and including version 2.0.1 which could result in certain sensitive information to be leaEPSS 2.0%CVE-2021-34922HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34936HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34939HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34937HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34933HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34931HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2023-4813MEDIUMGlibc: potential use-after-free in gaih_inet()EPSS 1.9%