Falhas do tipo CWE-122

3.195 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-2023-40031HIGHNotepad++ vulnerable to heap buffer write overflow in Utf8_16_Read::convertEPSS 0.5%CVE-2025-53741HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.5%CVE-2026-34118HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C100, C101 & C520WSEPSS 0.5%CVE-2026-45542HIGHESF-IDF: Heap buffer overflow in protocomm Security2 over BluetoothEPSS 0.5%CVE-2026-20876MEDIUMWindows Virtualization-Based Security (VBS) Enclave Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2023-0433HIGHHeap-based Buffer Overflow in vim/vimEPSS 0.5%CVE-2026-33164HIGHNULL Pointer Dereference in libde265EPSS 0.5%CVE-2024-5835MEDIUMHeap buffer overflow in Tab Groups in Google Chrome prior to 126.0.6478.54 allowed a remote attacker who convinced a user to engage in speciEPSS 0.5%CVE-2024-23127HIGHMultiple Vulnerabilities in the Autodesk AutoCAD Desktop SoftwareEPSS 0.5%CVE-2022-2601HIGHA buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glEPSS 0.5%CVE-2022-3491MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 0.5%CVE-2022-38415HIGHAdobe InDesign PCX File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-35677HIGHAdobe FrameMaker SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-38414HIGHAdobe InDesign SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2024-5228HIGHTP-Link Omada ER605 Comexe DDNS Response Handling Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-38433HIGHAdobe Photoshop SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2023-1655HIGHHeap-based Buffer Overflow in gpac/gpacEPSS 0.5%CVE-2022-38401HIGHAdobe InCopy PCX File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2022-38413HIGHAdobe InDesign SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.5%CVE-2025-62799HIGHFastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RCE)EPSS 0.5%