Falhas do tipo CWE-122

3.717 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-2022-0676HIGHHeap-based Buffer Overflow in radareorg/radare2EPSS 1.2%CVE-2026-50696HIGHInternet Key Exchange (IKE) Protocol Denial of Service VulnerabilityEPSS 1.2%CVE-2026-97016CRITICALMicrosoft Office Outlook Remote Code Execution VulnerabilityEPSS 1.2%CVE-2023-21560MEDIUMWindows Boot Manager Security Feature Bypass VulnerabilityEPSS 1.2%CVE-2025-23123CRITICALA malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a heap buffer overflow vulEPSS 1.2%CVE-2023-0854CRITICALBuffer overflow in NetBIOS QNAME registering and communication process of Office / Small Office Multifunction Printers and Laser Printers(*)EPSS 1.2%CVE-2026-34355HIGHApache HTTP Server: mod_proxy_html buffer overflowEPSS 1.2%CVE-2022-0407MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.2%CVE-2024-33428HIGHBuffer-Overflow vulnerability at conv.c:68 of stsaz phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via the a crafted .wEPSS 1.2%CVE-2023-0841MEDIUMGPAC reframe_mp3.c mp3_dmx_process heap-based overflowEPSS 1.2%CVE-2026-5201HIGHGdk-pixbuf: gdk-pixbuf: denial of service via heap-based buffer overflow when processing a specially crafted jpeg imageEPSS 1.1%CVE-2025-59254HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2017-16737—An issue was discovered in WECON Technology LEVI Studio HMI Editor v1.8.29 and prior. A specially-crafted malicious file may be able to causEPSS 1.1%CVE-2023-0851CRITICALBuffer overflow in CPCA Resource Download process of Office / Small Office Multifunction Printers and Laser Printers(*) which may allow an aEPSS 1.1%CVE-2021-21810HIGHA memory corruption vulnerability exists in the XML-parsing ParseAttribs functionality of AT&T Labs’ Xmill 0.7. A specially crafted XML fileEPSS 1.1%CVE-2025-49657HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-21783HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.1%CVE-2024-37977HIGHSecure Boot Security Feature Bypass VulnerabilityEPSS 1.1%CVE-2024-22532MEDIUMBuffer Overflow vulnerability in XNSoft NConvert 7.163 (for Windows x86) allows attackers to cause a denial of service via crafted xwd file.EPSS 1.1%CVE-2023-29073—A maliciously crafted MODEL file when parsed through Autodesk AutoCAD 2024 and 2023 can be used to cause a Heap-Based Buffer Overflow. A malEPSS 1.1%