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-2026-44420HIGHFreeRDP cliprdr server heap-buffer-overflow via undersized capabilitySetLength in CB_CLIP_CAPSEPSS 0.9%CVE-2026-75538HIGHA Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated PeerEPSS 0.9%CVE-2024-37041MEDIUMQTS, QuTS heroEPSS 0.9%CVE-2026-55556HIGHRsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handlingEPSS 0.9%CVE-2025-49670MEDIUMWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2024-5493HIGHHeap buffer overflow in WebRTC in Google Chrome prior to 125.0.6422.141 allowed a remote attacker to potentially exploit heap corruption viaEPSS 0.9%CVE-2023-50364MEDIUMQTS, QuTS heroEPSS 0.9%CVE-2020-15200MEDIUMSegfault in TensorflowEPSS 0.9%CVE-2025-15059HIGHGIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-21390HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.8%CVE-2025-57803HIGHImageMagick (WriteBMPImage): 32-bit integer overflow when writing BMP scanline stride → heap buffer overflowEPSS 0.8%CVE-2023-33146HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.8%CVE-2023-25668CRITICALTensorFlow vulnerable to heap out-of-buffer read in the QuantizeAndDequantize operationEPSS 0.8%CVE-2026-69494HIGHWindows Event Logging Service Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-81955HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-68828HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-69360HIGHMicrosoft Office Word Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-62744HIGHMicrosoft Windows Media Foundation Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-70351HIGHMicrosoft WebP Image Extension Remote Code Execution VulnerabilityEPSS 0.8%CVE-2026-69495HIGHWindows Event Logging Service Remote Code Execution VulnerabilityEPSS 0.8%