Falhas do tipo CWE-122

3.188 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-2025-21236HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21237HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21233HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21250HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21245HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.7%CVE-2025-21246HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 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%CVE-2024-38088HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.7%CVE-2021-43305—Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operationsEPSS 1.7%CVE-2021-43304—Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operationsEPSS 1.7%CVE-2022-43601HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 1.7%CVE-2022-43600HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 1.7%CVE-2021-24025—Due to incorrect string size calculations inside the preg_quote function, a large input string passed to the function can trigger an integerEPSS 1.7%CVE-2018-19093HIGHAn issue has been found in libIEC61850 v1.3. It is a SEGV in ControlObjectClient_setCommandTerminationHandler in client/client_control.c. NOEPSS 1.7%CVE-2024-43592HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2024-43593HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.7%CVE-2020-15800—A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT sEPSS 1.7%CVE-2024-37334HIGHMicrosoft OLE DB Driver for SQL Server Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-21367HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.6%