Falhas do tipo CWE-122

3.195 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-2026-58471MEDIUMGNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.cEPSS 0.4%CVE-2026-18271MEDIUMKenwood DNR1007XR vCardParser Heap-based Buffer Overflow Code Execution VulnerabilityEPSS 0.4%CVE-2023-1570LOWsyoyo tinydng tiny_dng_loader.h __interceptor_memcpy heap-based overflowEPSS 0.4%CVE-2026-18302HIGHGIMP TIF File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-20185HIGHCisco SG350 and SG350X Series Managed Switches SNMP Denial of Service VunerabilityEPSS 0.4%CVE-2025-54878HIGHHeap Buffer Overflow in NASA CryptoLib 1.4.0 `Crypto_TC_Check_IV_Setup`EPSS 0.4%CVE-2023-34432HIGHHeap-buffer-overflow in src/formats_i.cEPSS 0.4%CVE-2023-5460LOWDelta Electronics WPLSoft Modbus Data Packet heap-based overflowEPSS 0.4%CVE-2025-5830HIGHAutel MaxiCharger AC Wallbox Commercial DLB_SlaveRegister Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2021-28211—A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.EPSS 0.4%CVE-2026-49921CRITICALIn multiple locations, there is a possible memory safety issue due to a heap buffer overflow. This could lead to remote code execution with EPSS 0.4%CVE-2026-93381HIGHBuffer overflow in PDFium in Google Chrome on on Windows prior to 153.0.8010.52 allowed a remote attacker leveraging social engineering to pEPSS 0.4%CVE-2025-54329HIGHAn issue was discovered in NAS in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 2100, 1280, 2200, 1330, 1380EPSS 0.4%CVE-2026-26967HIGHPJSIP has a Heap-based Buffer Overflow vulnerability in its H.264 unpacketizerEPSS 0.4%CVE-2026-53938HIGHOpenIDC/cjose has a heap buffer overflow in AES Key Wrap decryption (A128KW/A192KW/A256KW)EPSS 0.4%CVE-2025-51005HIGHA heap-buffer-overflow vulnerability exists in the tcpliveplay utility of the tcpreplay-4.5.1. When a crafted pcap file is processed, the prEPSS 0.4%CVE-2024-11509HIGHIrfanView SVG File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2021-34971HIGHFoxit PDF Reader JPG2000 File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-27196HIGHPremiere Pro | Heap-based Buffer Overflow (CWE-122)EPSS 0.4%CVE-2025-27193HIGHBridge | Heap-based Buffer Overflow (CWE-122)EPSS 0.4%