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-2025-26416CRITICALIn initializeSwizzler of SkBmpStandardCodec.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to rEPSS 0.4%CVE-2023-32643MEDIUMA flaw was found in GLib. The GVariant deserialization code is vulnerable to a heap buffer overflow introduced by the fix for CVE-2023-32665EPSS 0.4%CVE-2023-6349MEDIUMHeap overflow in libvpxEPSS 0.4%CVE-2026-54122HIGHWindows GDI+ Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40364HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-69479HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-69638HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-42405HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is reEPSS 0.4%CVE-2026-32221HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40363HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-20809HIGHWindows Kernel Memory Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-47635HIGHMicrosoft Outlook and Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-11580HIGHLuxion KeyShot ABC File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58530HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58542HIGHWindows Media Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-26200HIGHHDF5 Affected by H5T__conv_struct_opt Heap Buffer OverflowEPSS 0.4%CVE-2026-34865CRITICALOut-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confiEPSS 0.4%CVE-2024-20785HIGHAdobe Indesign 2024 TIFF File Parsing Memory Corruption Remote Code Execution vulnerabilityEPSS 0.4%CVE-2026-34119HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WSEPSS 0.4%CVE-2024-41850HIGHAdobe Indesign 2024 TIF File Parsing Heap Memory CorruptionEPSS 0.4%