Fallos del tipo CWE-122

3195 resultados

Estouro de heap

É quando o código escreve dados além dos limites de um buffer alocado no heap (memória dinâmica), sobrescrevendo dados de outras estruturas adjacentes. Esse estouro pode corromper metadados do heap, variáveis vizinhas ou objetos do programa, permitindo execução de código arbitrário ou negação de serviço.

Ejemplo

Um servidor web recebe uma string de tamanho arbitrário e a copia para um buffer de 256 bytes sem validar o comprimento (ex: strcpy em C). Se o atacante enviar 500 bytes, o restante escreve além da zona alocada, corrompendo estruturas próximas e potencialmente ganhando controle do fluxo.

Cómo mitigar

Use funções seguras (strncpy, strlcpy, snprintf em C) que respeitam limites de tamanho; valide e sanitize entrada do usuário antes de copiar; ative proteções do SO (ASLR, DEP/NX); use linguagens de memória segura quando possível; aplique verificações de limites em loops de cópia.

CVE-2026-25589HIGHRedisBloom RESTORE invalid memory access may allow remote code executionEPSS 0.8%CVE-2026-25588HIGHRedisTimeSeries RESTORE invalid memory access may allow remote code executionEPSS 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-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-2026-32710HIGHHeap-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-2022-2566CRITICALHeap-memory write in FFMPEGEPSS 0.8%CVE-2026-57087HIGHMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-49164HIGHWindows Active Directory Domain Services Remote Code Execution VulnerabilityEPSS 0.8%CVE-2020-12819MEDIUMA heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 aEPSS 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%CVE-2019-16778LOWHeap buffer overflow in `UnsortedSegmentSum` in TensorFlowEPSS 0.8%