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-2026-72941HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-40404HIGHWindows Universal Disk Format File System Driver (UDFS) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83971HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69685HIGHWindows Kerberos Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-34343HIGHWindows Application Identity (AppID) Subsystem Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69580HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-61926HIGHWindows USB Driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50489HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69284HIGHWindows DCOM Server Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-54115HIGHWindows Message Queuing (MSMQ) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50407HIGHWindows Resilient File System (ReFS) 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-2026-44808HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62811HIGHWindows HTTP.sys Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-69513HIGHWindows Error Reporting Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-83970HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62695HIGHWindows Storage Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-50480HIGHWindows Web Proxy Auto-Discovery Protocol (WPAD) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2024-34250MEDIUMA heap buffer overflow vulnerability was discovered in Bytecode Alliance wasm-micro-runtime v2.0.0 which allows a remote attacker to cause aEPSS 0.3%