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-2026-25588HIGHRedisTimeSeries RESTORE invalid memory access may allow remote code executionEPSS 0.8%CVE-2026-25589HIGHRedisBloom RESTORE invalid memory access may allow remote code executionEPSS 0.8%CVE-2020-10064HIGHImproper Input Frame Validation in ieee802154 ProcessingEPSS 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-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-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-2026-32710HIGHHeap-based Buffer Overflow in MariaDBEPSS 0.8%CVE-2026-58264CRITICALFluidSynth: Heap-based buffer overrunEPSS 0.8%CVE-2025-58050MEDIUMPCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCSEPSS 0.8%CVE-2026-81642CRITICALHeap buffer overflow and possible Remote Code Execution when digesting DNSKEYEPSS 0.8%CVE-2022-2566CRITICALHeap-memory write in FFMPEGEPSS 0.8%CVE-2025-8178HIGHTenda AC10 RequestsProcessLaid heap-based overflowEPSS 0.8%CVE-2026-49164HIGHWindows Active Directory Domain Services Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-57087HIGHMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-8711CRITICALNGINX JavaScript vulnerabilityEPSS 0.8%CVE-2025-62452HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-60715HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-5686MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 0.8%CVE-2024-36843HIGHlibmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.EPSS 0.8%