Fallos del tipo CWE-416

5043 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-2023-5476HIGHUse after free in Blink History in Google Chrome prior to 118.0.5993.70 allowed a remote attacker to potentially exploit heap corruption viaEPSS 0.9%CVE-2023-2721HIGHUse after free in Navigation in Google Chrome prior to 113.0.5672.126 allowed a remote attacker to potentially exploit heap corruption via aEPSS 0.9%CVE-2022-37382LOWThis vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader 11.2.1.53537. UseEPSS 0.9%CVE-2022-37379LOWThis vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader 11.2.1.53537. UseEPSS 0.9%CVE-2022-34705HIGHWindows Defender Credential Guard Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2022-48340HIGHIn Gluster GlusterFS 11.0, there is an xlators/cluster/dht/src/dht-common.c dht_setxattr_mds_cbk use-after-free.EPSS 0.9%CVE-2023-35734LOWSante DICOM Viewer Pro DCM File Parsing Use-After-Free Information Disclosure VulnerabilityEPSS 0.9%CVE-2023-37117CRITICALA heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP.EPSS 0.9%CVE-2021-41043—Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.EPSS 0.9%CVE-2024-34161MEDIUMNGINX HTTP/3 QUIC vulnerabilityEPSS 0.9%CVE-2025-11234HIGHQemu-kvm: vnc websocket handshake use-after-freeEPSS 0.9%CVE-2025-27746HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-27750HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-49032HIGHMicrosoft Office Graphics Remote Code Execution VulnerabilityEPSS 0.9%CVE-2018-10879MEDIUMA flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a deniaEPSS 0.9%CVE-2023-4358HIGHUse after free in DNS in Google Chrome prior to 116.0.5845.96 allowed a remote attacker to potentially exploit heap corruption via a craftedEPSS 0.9%CVE-2024-38066HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2024-5702HIGHMemory corruption in the networking stack could have led to a potentially exploitable crash. This vulnerability affects Firefox < 125, FirefEPSS 0.9%CVE-2021-44447—A vulnerability has been identified in JT Utilities (All versions < V13.0.3.0), JTTK (All versions < V11.0.3.0). JTTK library in affected prEPSS 0.9%CVE-2025-3028MEDIUMUse-after-free triggered by XSLTProcessorEPSS 0.9%