Falhas do tipo CWE-122

3.737 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-2026-97777HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.8%CVE-2021-44442—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2021-44445—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2023-25668CRITICALTensorFlow vulnerable to heap out-of-buffer read in the QuantizeAndDequantize operationEPSS 0.8%CVE-2026-81955HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-69522HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-21390HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-121602HIGHSolanum before commit 2ce64de Heap Buffer Overflow via JOIN and SJOINEPSS 0.8%CVE-2025-15059HIGHGIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-41438MEDIUMA heap buffer overflow in the function cp_stored() (/vendor/cute_png.h) of hicolor v0.5.0 allows attackers to cause a Denial of Service (DoSEPSS 0.8%CVE-2022-44654HIGHAffected builds of Trend Micro Apex One and Apex One as a Service contain a monitor engine component that is complied without the /SAFESEH mEPSS 0.8%CVE-2023-23582MEDIUM Snap One Wattbox WB-300-IP-3 versions WB10.9a17 and prior are vulnerable to a heap-based buffer overflow, which could allow an attacker to EPSS 0.8%CVE-2025-10922HIGHGIMP DCM File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-38169HIGHMicrosoft Office Visio Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-57198LOWAsterisk: Possible RED T.140 Heap Buffer OverflowEPSS 0.8%CVE-2026-19874CRITICALKonami's Metal Gear Online 3 contains a heap-based buffer overflowEPSS 0.8%CVE-2023-36417HIGHMicrosoft SQL OLE DB Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-49081MEDIUMWireless Wide Area Network Service (WwanSvc) Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2024-49094MEDIUMWireless Wide Area Network Service (WwanSvc) Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-97776HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.8%