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-2021-46605HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.1%CVE-2021-46603HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.1%CVE-2019-6539—Several heap-based buffer overflow vulnerabilities in WECON LeviStudioU version 1.8.56 and prior have been identified, which may allow arbitEPSS 2.1%CVE-2021-34945HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.1%CVE-2022-43599HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 2.1%CVE-2020-27814—A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. An attacker could use this flaw to cause an applicatEPSS 2.1%CVE-2021-46653HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.1%CVE-2021-46648HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.1%CVE-2021-46647HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.1%CVE-2023-5568MEDIUMSamba: heap buffer overflow with freshness tokens in the heimdal kdcEPSS 2.1%CVE-2022-34819CRITICALA vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CPEPSS 2.1%CVE-2021-34327—A vulnerability has been identified in JT2Go (All versions < V13.2), Solid Edge SE2021 (All Versions < SE2021MP5), Teamcenter Visualization EPSS 2.1%CVE-2022-43602HIGHMultiple code execution vulnerabilities exist in the IFFOutput::close() functionality of OpenImageIO Project OpenImageIO v2.4.4.2. A specialEPSS 2.1%CVE-2021-34871HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.1%CVE-2024-38025HIGHMicrosoft Windows Performance Data Helper Library Remote Code Execution VulnerabilityEPSS 2.1%CVE-2024-49089HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 2.1%CVE-2025-2618CRITICALD-Link DAP-1620 Path api set_ws_action heap-based overflowEPSS 2.1%CVE-2025-49683HIGHMicrosoft Virtual Hard Disk Remote Code Execution VulnerabilityEPSS 2.1%CVE-2020-25181—WECON PLC Editor Versions 1.3.8 and prior has a heap-based buffer overflow vulnerabilities have been identified that may allow arbitrary codEPSS 2.1%CVE-2023-37328HIGHGStreamer PGS File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 2.1%