Falhas do tipo CWE-122

3.190 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-2026-69462HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-68880HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69727HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69773HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69625HIGHConnected User Experiences and Telemetry Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2024-7534HIGHHeap buffer overflow in Layout in Google Chrome prior to 127.0.6533.99 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.8%CVE-2025-10922HIGHGIMP DCM File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-38161MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-48263HIGHThe vulnerability allows an unauthenticated remote attacker to perform a Denial-of-Service (DoS) attack or, possibly, obtain Remote Code ExeEPSS 0.8%CVE-2024-41440MEDIUMA heap buffer overflow in the function png_quantize() of hicolor v0.5.0 allows attackers to cause a Denial of Service (DoS) via a crafted PNEPSS 0.8%CVE-2026-78689CRITICALNGINX ngx_http_js_module vulnerablilityEPSS 0.8%CVE-2026-5244MEDIUMCesanta Mongoose TLS 1.3 mongoose.c mg_tls_recv_cert heap-based overflowEPSS 0.8%CVE-2024-38238HIGHKernel Streaming Service Driver Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2023-36865HIGHMicrosoft Office Visio Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-71328HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-28240HIGHWindows Network Load Balancing Remote Code Execution VulnerabilityEPSS 0.8%CVE-2022-1383MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 0.8%CVE-2026-11826HIGHOpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()EPSS 0.8%CVE-2025-49674HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-53994HIGHProFTPD mod_sftp Heap Buffer Overflow via Unsigned Integer Underflow and Size TruncationEPSS 0.7%