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-2026-62747HIGHWindows Device Association Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62894HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69455HIGHWindows Remote Access Connection Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83967HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69421HIGHWindows Kernel-Mode Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83987HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-61923HIGHWindows Display Enhancement Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69801HIGHWindows Audio Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69603HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-49793HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-83983HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83971HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72993HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-54115HIGHWindows Message Queuing (MSMQ) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-44808HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62735HIGHWindows HTTP.sys Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69436HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72953HIGHWindows USB Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-68844HIGHWindows Storage Spaces Controller Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-69542HIGHWindows Camera Frame Server Monitor Elevation of Privilege VulnerabilityEPSS 0.3%