Falhas do tipo CWE-122

3.735 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2024-48995HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21250HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-48993HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-38255HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-43462HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21246HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21245HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21236HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21237HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21240HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21233HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-48994HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.7%CVE-2021-3927HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.7%CVE-2026-25589HIGHRedisBloom RESTORE invalid memory access may allow remote code executionEPSS 1.7%CVE-2023-25181CRITICALA heap-based buffer overflow vulnerability exists in the HTTP Server functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted EPSS 1.7%CVE-2024-49104HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-49102HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-22857CRITICALHeap based buffer flow in zlog v1.1.0 to v1.2.17 in zlog_rule_new().The size of record_name is MAXLEN_PATH(1024) + 1 but file_path may have EPSS 1.7%CVE-2022-0261—Heap-based Buffer Overflow in vim/vimEPSS 1.7%CVE-2019-3570—Call to the scrypt_enc() function in HHVM can lead to heap corruption by using specifically crafted parameters (N, r and p). This happens ifEPSS 1.7%