Falhas do tipo CWE-122

3.190 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-2025-15233HIGHTenda M3 setAdInfoDetail formSetAdInfoDetails heap-based overflowEPSS 0.7%CVE-2022-35706HIGHAdobe Bridge SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-15230HIGHTenda M3 setVlanPolicyData formSetVlanPolicy heap-based overflowEPSS 0.7%CVE-2023-29370HIGHWindows Media Remote Code Execution VulnerabilityEPSS 0.7%CVE-2020-25664—In WriteOnePNGImage() of the PNG coder at coders/png.c, an improper call to AcquireVirtualMemory() and memset() allows for an out-of-bounds EPSS 0.7%CVE-2026-0793HIGHALGO 8180 IP Audio Alerter InformaCast Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-5450CRITICALscanf %mc off-by-one heap buffer overflowEPSS 0.7%CVE-2024-43578HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-43579HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-44421HIGHFreeRDP RDPGFX CacheToSurface heap-buffer-overflow via clamped-rectangle validation bypassEPSS 0.7%CVE-2024-25448HIGHAn issue in the imlib_free_image_and_decache function of imlib2 v1.9.1 allows attackers to cause a heap buffer overflow via parsing a crafteEPSS 0.7%CVE-2025-53149HIGHKernel Streaming WOW Thunk Service Driver Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2024-41147HIGHAn out-of-bounds write vulnerability exists in the ma_dr_flac__decode_samples__lpc functionality of Miniaudio miniaudio v0.11.21. A speciallEPSS 0.7%CVE-2026-32956CRITICALSD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in processing the redirect UREPSS 0.7%CVE-2024-38079HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2026-53362HIGHipv6: account for fraggap on the paged allocation pathEPSS 0.7%KEVCVE-2026-69786HIGHWindows Text Shaping Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-65796HIGHWindows iSCSI Target Service Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-69732HIGHWindows Link Layer Topology Discovery Protocol Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-62781HIGHRPC Runtime Library Remote Code Execution VulnerabilityEPSS 0.7%