Falhas do tipo CWE-122

3.735 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-2021-34312—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Tiff_loader.dll liEPSS 1.9%CVE-2013-7353MEDIUMInteger overflow in the png_set_unknown_chunks function in libpng/pngset.c in libpng before 1.5.14beta08 allows context-dependent attackers EPSS 1.9%CVE-2016-8654HIGHA heap-buffer overflow vulnerability was found in QMFB code in JPC codec caused by buffer being allocated with too small size. jasper versioEPSS 1.9%CVE-2018-1124HIGHprocps-ng before version 3.3.15 is vulnerable to multiple integer overflows leading to a heap corruption in file2strvec function. This allowEPSS 1.9%CVE-2021-41253MEDIUMPossible heap buffer overflow when using zycore string functions in formatter hooksEPSS 1.9%CVE-2024-21414HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-37332HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-37318HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-35271HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-37331HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-35272HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-21398HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2025-21172HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 1.8%CVE-2026-33837HIGHWindows TCP/IP Local Elevation of Privilege VulnerabilityEPSS 1.8%CVE-2022-0158MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.8%CVE-2025-21410HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2025-21407HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.8%CVE-2024-38116HIGHWindows IP Routing Management Snapin Remote Code Execution VulnerabilityEPSS 1.8%CVE-2018-3857HIGHAn exploitable heap overflow exists in the TIFF parsing functionality of Canvas Draw version 4.0.0. A specially crafted TIFF image processedEPSS 1.8%CVE-2024-43611HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%