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-2026-72973HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.8%CVE-2022-44654HIGHAffected builds of Trend Micro Apex One and Apex One as a Service contain a monitor engine component that is complied without the /SAFESEH mEPSS 0.8%CVE-2024-20259HIGHA vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected dEPSS 0.8%CVE-2021-44445—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2023-47038HIGHPerl: write past buffer end via illegal user-defined unicode propertyEPSS 0.8%CVE-2021-44442—A vulnerability has been identified in JT Utilities (All versions < V13.1.1.0), JTTK (All versions < V11.1.1.0). JTTK library in affected prEPSS 0.8%CVE-2024-32617HIGHHDF5 Library through 1.14.3 contains a heap-based buffer over-read caused by the unsafe use of strdup in H5MM_xstrdup in H5MM.c (called fromEPSS 0.8%CVE-2022-1244HIGHheap-buffer-overflow in radareorg/radare2EPSS 0.8%CVE-2025-53783HIGHMicrosoft Teams Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-4892HIGHCVE-2026-4892EPSS 0.8%CVE-2026-76036CRITICALBuffer overflow in Dawn in Google Chrome on on Android prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code outside tEPSS 0.8%CVE-2020-10064HIGHImproper Input Frame Validation in ieee802154 ProcessingEPSS 0.8%CVE-2021-31986—User controlled parameters related to SMTP notifications are not correctly validated. This can lead to a buffer overflow resulting in crasheEPSS 0.8%CVE-2026-69522HIGH.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 0.8%CVE-2020-10646—Fuji Electric V-Server Lite all versions prior to 4.0.9.0 contains a heap based buffer overflow. The buffer allocated to read data, when parEPSS 0.8%CVE-2022-46290CRITICALMultiple out-of-bounds write vulnerabilities exist in the ORCA format nAtoms functionality of Open Babel 3.1.1 and master commit 530dbfa3. AEPSS 0.8%CVE-2022-46289CRITICALMultiple out-of-bounds write vulnerabilities exist in the ORCA format nAtoms functionality of Open Babel 3.1.1 and master commit 530dbfa3. AEPSS 0.8%CVE-2026-70203HIGHWindows Media Player Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-69518HIGHWindows Remote Desktop Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-70586HIGHWindows Paint Remote Code Execution VulnerabilityEPSS 0.8%