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-2024-21369HIGHMicrosoft WDAC OLE DB provider for SQL Server Remote Code Execution VulnerabilityEPSS 1.5%CVE-2021-3875HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2023-36532MEDIUMBuffer overflow in Zoom Clients before 5.14.5 may allow an unauthenticated user to enable a denial of service via network access.EPSS 1.5%CVE-2025-27477HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.5%CVE-2022-2182HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2024-24577HIGHlibgit2 is vulnerable to arbitrary code execution due to heap corruption in `git_index_add`EPSS 1.5%CVE-2025-24056HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.5%CVE-2023-27395CRITICALA heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674EPSS 1.5%CVE-2022-0417HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2024-49125HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2020-13586HIGHA memory corruption vulnerability exists in the Excel Document SST Record 0x00fc functionality of SoftMaker Software GmbH SoftMaker Office PEPSS 1.5%CVE-2022-0392MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2023-51596HIGHBlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.5%CVE-2022-22188HIGHJunos OS: QFX5100/QFX5110/QFX5120/QFX5200/QFX5210/EX4600/EX4650 Series: When storm control profiling is enabled and a device is under an active storm, a Heap-based Buffer Overflow in the PFE will cause a device to hang.EPSS 1.5%CVE-2021-45918HIGHNHI’s health insurance web service component – Heap-based Buffer OverflowEPSS 1.5%CVE-2021-29464LOWHeap buffer overflow in Exiv2::Jp2Image::encodeJp2HeaderEPSS 1.5%CVE-2024-49775CRITICALA vulnerability has been identified in Opcenter Execution Foundation (All versions < V2501.0001), Opcenter Intelligence (All versions < V250EPSS 1.5%CVE-2018-3858HIGHAn exploitable heap overflow exists in the TIFF parsing functionality of Canvas Draw version 4.0.0. A specially crafted TIFF image processedEPSS 1.5%CVE-2021-3872HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2023-50230HIGHBlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.5%