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-2026-4391MEDIUMTeamSpeak 3 Server ECC Key heap-based overflowEPSS 0.7%CVE-2023-35374HIGHPaint 3D Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-27091HIGHOpenH264 Decoding Functions Heap Overflow VulnerabilityEPSS 0.7%CVE-2025-20680CRITICALIn Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilEPSS 0.7%CVE-2023-36771HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-33984HIGHFreeRDP: ClearCodec resize_vbar_entry() Heap OOB WriteEPSS 0.7%CVE-2023-36772HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.7%CVE-2020-37162HIGHWedding Slideshow Studio 1.36 - 'Key' Buffer OverflowEPSS 0.7%CVE-2026-59134HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-61363HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-4504HIGHOpenPrinting CUPS/libppd Postscript Parsing Heap OverflowEPSS 0.7%CVE-2023-36740HIGH3D Viewer Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-36739HIGH3D Viewer Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-64693CRITICALSecurity Point (Windows) of MaLion and MaLionCloud contains a heap-based buffer overflow vulnerability in processing Content-Length. ReceiviEPSS 0.7%CVE-2023-20081MEDIUMCisco Adaptive Security Appliance Software, Firepower Threat Defense Software, IOS Software, and IOS XE Software IPv6 DHCP (DHCPv6) Client Denial of Service VulnerabilityEPSS 0.7%CVE-2025-1176LOWGNU Binutils ld elflink.c _bfd_elf_gc_mark_rsec heap-based overflowEPSS 0.7%CVE-2025-57740MEDIUMAn Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below,EPSS 0.7%CVE-2025-40930HIGHJSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impactEPSS 0.7%CVE-2024-43526MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.7%CVE-2024-43525MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.7%