Falhas do tipo CWE-122

3.734 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-2021-34770CRITICALCisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution VulnerabilityEPSS 3.0%CVE-2019-10951—Delta Industrial Automation CNCSoft, CNCSoft ScreenEditor Version 1.00.88 and prior. Multiple heap-based buffer overflow vulnerabilities mayEPSS 2.9%CVE-2013-3245MEDIUMplugins/demux/libmkv_plugin.dll in VideoLAN VLC Media Player 2.0.7, and possibly other versions, allows remote attackers to cause a denial oEPSS 2.9%CVE-2025-15234HIGHTenda M3 setInternetLanInfo formSetRemoteInternetLanInfo heap-based overflowEPSS 2.9%CVE-2019-5030HIGHA buffer overflow vulnerability exists in the PowerPoint document conversion function of Rainbow PDF Office Server Document Converter V7.0 PEPSS 2.9%CVE-2023-36028CRITICALMicrosoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution VulnerabilityEPSS 2.8%CVE-2024-28910HIGHMicrosoft OLE DB Driver for SQL Server Remote Code Execution VulnerabilityEPSS 2.8%CVE-2017-2591LOW389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "aEPSS 2.8%CVE-2015-6457—Moxa SoftCMS 1.3 and prior is susceptible to a buffer overflow condition that may crash or allow remote code execution. Moxa released SoftCMEPSS 2.8%CVE-2021-38439HIGHGurumDDS Heap-based Buffer OverflowEPSS 2.8%CVE-2018-14653MEDIUMThe Gluster file system through versions 4.1.4 and 3.12 is vulnerable to a heap-based buffer overflow in the '__server_getspec' function viaEPSS 2.8%CVE-2021-31436HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.931. User interacEPSS 2.8%CVE-2018-14290—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interactioEPSS 2.7%CVE-2018-7507—WPLSoft in Delta Electronics versions 2.45.0 and prior utilizes a fixed length heap buffer where a value larger than the buffer can be read EPSS 2.7%CVE-2023-28311HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 2.7%CVE-2026-41096CRITICALWindows DNS Client Remote Code Execution VulnerabilityEPSS 2.7%CVE-2019-18330—A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 ServEPSS 2.7%CVE-2019-18326—A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 ServEPSS 2.7%CVE-2019-18329—A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 ServEPSS 2.7%CVE-2019-18324—A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 ServEPSS 2.7%