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-2026-69389HIGHWindows Storage Management Provider Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83983HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-56182HIGHWindows NTFS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83975HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-65671HIGHRemote Access API Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69592HIGHWindows Universal Disk Format File System Driver (UDFS) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69604HIGHWindows Audio Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-73001HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-35420HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69691HIGHWindows Spaceport.sys Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-61937HIGHWindows HTTP.sys Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-42896HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-66799HIGHWindows Key Guard Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-49800HIGHWindows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-65787HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-56175HIGHWindows NTFS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69323HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-65774HIGHWindows Installer Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-68848HIGHWindows Print Spooler Components Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62717HIGHWindows Message Queuing Elevation of Privilege VulnerabilityEPSS 0.3%