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-2022-2122—DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemux_inflate function which caEPSS 0.5%CVE-2024-40129HIGHOpen5GS v2.6.4 is vulnerable to Buffer Overflow. via /lib/pfcp/context.c.EPSS 0.5%CVE-2026-21095CRITICALHeap-based buffer overflow in DNG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitEPSS 0.5%CVE-2022-1922—DOS / potential heap overwrite in mkv demuxing using zlib decompression. Integer overflow in matroskademux element in gst_matroska_decompresEPSS 0.5%CVE-2025-44905HIGHhdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5Z__filter_scaleoffset function.EPSS 0.5%CVE-2026-79231HIGHBuffer overflow in Media in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via EPSS 0.5%CVE-2025-0753MEDIUMAxiomatic Bento4 mp42aac ReadPartial heap-based overflowEPSS 0.5%CVE-2026-79142HIGHBuffer overflow in ANGLE in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside tEPSS 0.5%CVE-2023-0866HIGHHeap-based Buffer Overflow in gpac/gpacEPSS 0.5%CVE-2026-17935HIGHHeap buffer overflow in Codecs in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox EPSS 0.5%CVE-2026-5868HIGHHeap buffer overflow in ANGLE in Google Chrome on Mac prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a saEPSS 0.5%CVE-2024-38950MEDIUMHeap Buffer Overflow vulnerability in Libde265 v1.0.15 allows attackers to crash the application via crafted payload to __interceptor_memcpyEPSS 0.5%CVE-2026-76022HIGHBuffer overflow in Network in Google Chrome prior to 151.0.7922.173 allowed a remote attacker to execute arbitrary code outside the sandbox EPSS 0.5%CVE-2025-27478HIGHWindows Local Security Authority (LSA) Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2025-64679HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-19970MEDIUMOpen Asset Import Library Assimp Node MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 heap-based overflowEPSS 0.5%CVE-2026-84269MEDIUMGvfs: afp: heap-based buffer overflow in dsi read pathEPSS 0.5%CVE-2026-19967MEDIUMOpen Asset Import Library Assimp File Compression.cpp decompressBlock heap-based overflowEPSS 0.5%CVE-2026-86870MEDIUMA heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, mEPSS 0.5%CVE-2026-84510MEDIUMA heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, mEPSS 0.5%