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-2026-83973HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83982HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69589HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83967HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-26180HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83978HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-33841HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-40377HIGHMicrosoft Cryptographic Services Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-40403HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-26176HIGHWindows Client Side Caching driver (csc.sys) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-84000HIGHMicrosoft Graphics Component Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-69583HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69420HIGHMicrosoft VOLSNAP.SYS Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-54109HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 0.3%CVE-2026-65790HIGHWindows Message Queuing Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69447HIGHWindows Audio Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62712HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69444HIGHMicrosoft Windows Speech Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50363HIGHWindows Push Notifications Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83985HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%