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-2026-67381HIGHMicrosoft SQL Server Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2026-62800HIGHWindows SMBv3 Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-72959HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-64620CRITICALFreeRDP before 3.28.0 Heap Buffer Overflow via crypto_rsa_commonEPSS 0.9%CVE-2026-73012HIGHWindows Management Services Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2026-67373HIGHMicrosoft SQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-78456HIGHSQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-69628HIGHWindows iSCSI Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-62913HIGHMicrosoft Exchange Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-62784HIGHMicrosoft Local Security Authority Server (lsasrv) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-69729HIGHWindows Credential Providers Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-67642HIGHMicrosoft SQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-68786HIGHMicrosoft SQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-67380HIGHMicrosoft SQL Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-48564HIGHDHCP Server Service Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-69547HIGHWindows DHCP Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-62790HIGHWindows SMBv3 Server Remote Code Execution VulnerabilityEPSS 0.9%CVE-2023-32140HIGHD-Link DAP-1360 webproc var:sys_Token Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-33877HIGHHDF5 Library through 1.14.3 has a heap-based buffer overflow in H5T__conv_struct_opt in H5Tconv.c.EPSS 0.9%CVE-2024-33873HIGHHDF5 Library through 1.14.3 has a heap-based buffer overflow in H5D__scatter_mem in H5Dscatgath.c.EPSS 0.9%