Fallos del tipo CWE-122

3195 resultados

Estouro de heap

É quando o código escreve dados além dos limites de um buffer alocado no heap (memória dinâmica), sobrescrevendo dados de outras estruturas adjacentes. Esse estouro pode corromper metadados do heap, variáveis vizinhas ou objetos do programa, permitindo execução de código arbitrário ou negação de serviço.

Ejemplo

Um servidor web recebe uma string de tamanho arbitrário e a copia para um buffer de 256 bytes sem validar o comprimento (ex: strcpy em C). Se o atacante enviar 500 bytes, o restante escreve além da zona alocada, corrompendo estruturas próximas e potencialmente ganhando controle do fluxo.

Cómo mitigar

Use funções seguras (strncpy, strlcpy, snprintf em C) que respeitam limites de tamanho; valide e sanitize entrada do usuário antes de copiar; ative proteções do SO (ASLR, DEP/NX); use linguagens de memória segura quando possível; aplique verificações de limites em loops de cópia.

CVE-2026-69727HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-69875HIGHWindows NTFS 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-2024-43579HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-43578HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 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%