Falhas do tipo CWE-122

3.736 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2026-3085HIGHGStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37321HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37329HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-35256HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37333HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37328HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37324HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37330HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2021-3875HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2023-36532MEDIUMBuffer overflow in Zoom Clients before 5.14.5 may allow an unauthenticated user to enable a denial of service via network access.EPSS 1.5%CVE-2024-21369HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-24577HIGHlibgit2 is vulnerable to arbitrary code execution due to heap corruption in `git_index_add`EPSS 1.5%CVE-2020-13586HIGHA memory corruption vulnerability exists in the Excel Document SST Record 0x00fc functionality of SoftMaker Software GmbH SoftMaker Office PEPSS 1.5%CVE-2023-27395CRITICALA heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674EPSS 1.5%CVE-2022-2182HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2021-45918HIGHNHI’s health insurance web service component – Heap-based Buffer OverflowEPSS 1.5%CVE-2022-0417HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2024-49125HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49004HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49000HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%