Weaknesses of type CWE-122

3,195 results

Transbordamento de heap (heap overflow)

Ocorre quando um programa escreve dados além dos limites de um buffer alocado dinamicamente na memória heap, sobrescrevendo dados adjacentes ou metadados do alocador. Isso permite que um atacante corrompa estruturas críticas, execute código arbitrário ou cause travamento da aplicação.

Example

Uma função recebe um tamanho de entrada sem validar e copia para um buffer: `strcpy(heap_buffer, user_input)` sem verificar se user_input cabe. Se o usuário enviar 1000 bytes para um buffer de 256, o overflow sobrescreve estruturas próximas no heap e pode ser explorado para RCE.

How to mitigate

Use funções seguras de cópia (`strncpy`, `strlcpy`), valide e limite o tamanho da entrada antes de copiar, e considere usar linguagens com gerenciamento automático de memória ou ferramentas como AddressSanitizer durante testes para detectar overflows.

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%