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-2026-61359HIGHWindows Storage Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69433HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69307HIGHWindows USB Audio Class driver (usbaudio.sys) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69456HIGHMicrosoft Windows Speech Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69589HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72941HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72957HIGHWindows Deployment Services Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-69513HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69593HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62736HIGHWindows DHCP Client Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50417HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-49800HIGHWindows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-72994HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-68877HIGHWindows Storage Spaces Controller Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-65790HIGHWindows Message Queuing Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69420HIGHMicrosoft VOLSNAP.SYS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-68841HIGHWindows NTFS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-73021HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62754HIGHWindows Kerberos Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-26180HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%