Fallos del tipo CWE-122

3195 resultados

Estouro de heap

É quando o código escreve dados além dos limites de um buffer alocado no heap (memória dinâmica), sobrescrevendo dados de outras estruturas adjacentes. Esse estouro pode corromper metadados do heap, variáveis vizinhas ou objetos do programa, permitindo execução de código arbitrário ou negação de serviço.

Ejemplo

Um servidor web recebe uma string de tamanho arbitrário e a copia para um buffer de 256 bytes sem validar o comprimento (ex: strcpy em C). Se o atacante enviar 500 bytes, o restante escreve além da zona alocada, corrompendo estruturas próximas e potencialmente ganhando controle do fluxo.

Cómo mitigar

Use funções seguras (strncpy, strlcpy, snprintf em C) que respeitam limites de tamanho; valide e sanitize entrada do usuário antes de copiar; ative proteções do SO (ASLR, DEP/NX); use linguagens de memória segura quando possível; aplique verificações de limites em loops de cópia.

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%