Weaknesses of type CWE-122

3,195 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

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%