Falhas do tipo CWE-122

3.189 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-2024-30095HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-2905—Cesanta Mongoose MQTT Message Parsing Heap OverflowEPSS 1.0%CVE-2023-2157MEDIUMA heap-based buffer overflow vulnerability was found in the ImageMagick package that can lead to the application crashing.EPSS 1.0%CVE-2026-55005HIGHMicrosoft Exchange Server Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-3516HIGHHeap buffer overflow in ANGLE in Google Chrome prior to 123.0.6312.122 allowed a remote attacker to potentially exploit heap corruption via EPSS 1.0%CVE-2022-0518MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 1.0%CVE-2024-38032HIGHMicrosoft Xbox Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-91104CRITICALHP Linux Imaging and Printing (HPLIP) Software– Multiple VulnerabilitiesEPSS 1.0%CVE-2026-69408CRITICALMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-9019LOWtcpreplay tcpprep cidr.c mask_cidr6 heap-based overflowEPSS 1.0%CVE-2026-69493CRITICALWindows Event Logging Service Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-69824CRITICALMicrosoft Standard XPS Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-6246CRITICALWyze Cam v3 Realtek Wi-Fi Driver Heap-Based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.0%CVE-2025-3712HIGHATEN LCD KVM over IP Switch CL5708IM - Heap-based Buffer OverflowEPSS 1.0%CVE-2025-3713HIGHATEN LCD KVM over IP Switch CL5708IM - Heap-based Buffer OverflowEPSS 1.0%CVE-2024-8948MEDIUMMicroPython objint.c mpz_as_bytes heap-based overflowEPSS 1.0%CVE-2017-7908—A heap-based buffer overflow exists in the third-party product Gigasoft, v5 and prior, included in GE Communicator 3.15 and prior. A malicioEPSS 1.0%CVE-2025-49757HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-21330HIGHOpen Management Infrastructure (OMI) Elevation of Privilege VulnerabilityEPSS 1.0%CVE-2024-43518HIGHWindows Telephony Server Remote Code Execution VulnerabilityEPSS 1.0%