Weaknesses of type CWE-122

3,202 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

CVE-2026-13884HIGHInteger overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via malicious netwEPSS 0.2%CVE-2026-2913LOWlibvips source.c vips_source_read_to_memory heap-based overflowEPSS 0.2%CVE-2023-49123HIGHA vulnerability has been identified in Solid Edge SE2023 (All versions < V223.0 Update 10). The affected application is vulnerable to heap-bEPSS 0.2%CVE-2026-15028LOWLibarchive: heap overflow oob read while parsing a tar archive contains a pax extended headerEPSS 0.2%CVE-2023-49122HIGHA vulnerability has been identified in Solid Edge SE2023 (All versions < V223.0 Update 10). The affected application is vulnerable to heap-bEPSS 0.2%CVE-2025-12659HIGHHeap-based buffer overflow in Siemens Simcenter FemapEPSS 0.2%CVE-2026-29043MEDIUMHDF5 H5T__ref_mem_setnull Heap Buffer OverflowEPSS 0.2%CVE-2026-69563HIGHWindows Program Compatibility Assistant Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2024-51480HIGHRedisTimeSeries Integer Overflow Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-81355HIGHVirtual Hard Disk (VHD) Miniport Driver Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-90556HIGHFreeciv before 3.2.6 Heap Buffer Overflow via worklist_loadEPSS 0.2%CVE-2026-47747HIGHstable-diffusion.cpp has a Heap-based Buffer OverflowEPSS 0.2%CVE-2026-32093HIGHWindows Function Discovery Service (fdwsd.dll) Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2024-0257LOWRoboDK Heap-based Buffer OverflowEPSS 0.2%CVE-2026-88806HIGHlibX11 XkbGetMap Reply Heap-based Buffer OverflowEPSS 0.2%CVE-2026-75141HIGHFFmpeg Heap Buffer Overflow in hvcC Box Writer via HEVC MuxingEPSS 0.2%CVE-2025-64784HIGHDNG SDK | Heap-based Buffer Overflow (CWE-122)EPSS 0.2%CVE-2026-75665HIGHBridge | Heap-based Buffer Overflow (CWE-122)EPSS 0.2%CVE-2026-75144HIGHFFmpeg Heap Buffer Overflow in VC-2/Dirac RTP PacketizerEPSS 0.2%CVE-2025-31177MEDIUMGnuplot: gnuplot heap-buffer overflow on utf8_copy_oneEPSS 0.2%