Weaknesses of type CWE-416

5,043 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2026-69706HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69451HIGHWindows Management Instrumentation Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-68846HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-68893HIGHRemote Desktop Licensing Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69757HIGHWindows TCP/IP Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69338HIGHRemote Desktop Gateway Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69775HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69274HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69396HIGHWindows NDIS Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69597HIGHWindows HTTP.sys Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-68835HIGHWindows Print Spooler Components Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69296HIGHWindows Device Association Service Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-69536HIGHRemote Desktop Services Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-69761HIGHWindows TCP/IP Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-50414HIGHWindows Media Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-64703CRITICALA use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOEPSS 0.6%CVE-2024-30808LOWAn issue was discovered in Bento4 v1.6.0-641-2-g1529b83. There is a heap-use-after-free in AP4_SubStream::~AP4_SubStream at Ap4ByteStream.cpEPSS 0.6%CVE-2024-37030HIGHArkcompiler Ets Runtime has a use after free vulnerabilityEPSS 0.6%CVE-2026-19666HIGHUse-after-free in query_addnoqnameproof() via the DNS64 filter64 pathEPSS 0.6%CVE-2026-50398HIGHWindows Media Elevation of Privilege VulnerabilityEPSS 0.6%