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-2026-58471MEDIUMGNU 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%