Falhas do tipo CWE-789
251 resultadosAlocação descontrolada de memória
Ocorre quando uma aplicação aloca memória em quantidade determinada por entrada do usuário sem validação ou limite. Um atacante fornece valores muito grandes, causando consumo excessivo de RAM, negação de serviço ou travamento do sistema.
Exemplo
Uma API aceita um parâmetro 'tamanho_array' e aloca memória diretamente: malloc(tamanho_array * sizeof(int)). Se o atacante enviar tamanho_array = 2 bilhões, a alocação falha ou consome toda a memória disponível, derrubando o serviço.
Como mitigar
Implemente limites máximos hardcoded para alocações baseadas em entrada externa. Valide e sanitize parâmetros de tamanho antes de usar, rejeitando valores acima de um threshold sensato. Monitore consumo de memória por requisição e implemente rate limiting.
CVE-2026-40891MEDIUMOpenTelemetry dotnet: Unbounded `grpc-status-details-bin` parsing in OTLP/gRPC retry handlingEPSS 0.2%CVE-2026-39882MEDIUMOpenTelemetry-Go OTLP HTTP exporters read unbounded HTTP response bodiesEPSS 0.2%CVE-2024-40680MEDIUMIBM MQ denial of serviceEPSS 0.2%CVE-2026-47734MEDIUMDulwich has unbounded memory allocation in receive-pack from crafted thin packsEPSS 0.2%CVE-2026-53428MEDIUMUnbounded memory allocation in highlight_lines range expansion in mdexEPSS 0.2%CVE-2026-26931MEDIUMMemory Allocation with Excessive Size Value in Metricbeat Leading to Denial of ServiceEPSS 0.2%CVE-2026-32836MEDIUMmackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata ParsingEPSS 0.2%CVE-2022-20845MEDIUMCisco Network Convergence System 4000 Series TL1 Denial of Service VulnerabilityEPSS 0.2%CVE-2026-29776LOWFreeRDP has an Integer Underflow in update_read_cache_bitmap_order Function of FreeRDP's Core LibraryEPSS 0.2%CVE-2026-2456MEDIUMDenial of Service via Unbounded Memory Allocation in Integration ActionsEPSS 0.2%CVE-2026-55782LOWNanaZip: Unbounded memory allocation (DoS) in NanaZip WebAssembly parser via attacker-controlled section/name length fieldsEPSS 0.2%CVE-2026-14683MEDIUMHdrHistogram AbstractHistogram.java memory allocationEPSS 0.2%CVE-2026-14684MEDIUMHdrHistogram AbstractHistogram.java memory allocationEPSS 0.2%CVE-2026-55781LOWNanaZip: Unbounded memory allocation (DoS) in NanaZip UFS parser via unvalidated fs_bsize/fs_fsize superblock fieldsEPSS 0.2%CVE-2026-52759MEDIUMGhidra < 12.1.1 - Denial of Service via Uncontrolled Memory Allocation in Mach-O ParserEPSS 0.2%CVE-2026-52753MEDIUMGhidra < 12.0.3 - Out-of-Memory in Rust Symbol Demangler via Malformed SymbolEPSS 0.2%CVE-2018-25378MEDIUMNotebook Pro 2.0 Denial of Service via Notebook Name FieldEPSS 0.1%CVE-2026-66485MEDIUMUncontrolled Memory Allocation in GNU cpioEPSS 0.1%CVE-2018-25295MEDIUMObserverIP Scan Tool 1.4.0.1 Denial of Service via IP FieldEPSS 0.1%CVE-2018-25279MEDIUMjiNa OCR Image to Text 1.0 Denial of Service via PNGEPSS 0.1%