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-2026-56789HIGHRTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite CountEPSS 0.4%CVE-2023-21804HIGHWindows Graphics Component Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2023-25890HIGHZDI-CAN-19493: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-25895HIGHZDI-CAN-19540: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-25885HIGHZDI-CAN-19480: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-56208HIGHLibaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap modeEPSS 0.4%CVE-2023-25898HIGHZDI-CAN-19521: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-1052HIGHHeap Buffer Overflow in iterate_chained_fixups in radareorg/radare2EPSS 0.4%CVE-2023-25897HIGHZDI-CAN-19520: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-2061LOWHeap-based Buffer Overflow in hpjansson/chafaEPSS 0.4%CVE-2026-40380MEDIUMWindows Volume Manager Extension Driver Remote Code Execution VulnerabilityEPSS 0.4%CVE-2025-65085HIGHHeap-based Buffer Overflow in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt ShareEPSS 0.4%CVE-2026-6305HIGHHeap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandboxEPSS 0.4%CVE-2024-8798HIGHBluetooth: classic: avdtp: missing buffer length checkEPSS 0.4%CVE-2026-6306HIGHHeap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandboxEPSS 0.4%CVE-2026-45696HIGHOpenEXR HTJ2K decoder heap buffer over-read in ht_undo_impl() (DoS)EPSS 0.4%CVE-2016-15059CRITICALNet::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycodeEPSS 0.4%CVE-2026-8529HIGHHeap buffer overflow in Codecs in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandboxEPSS 0.4%CVE-2023-47039HIGHPerl: perl for windows binary hijacking vulnerabilityEPSS 0.4%CVE-2024-20508MEDIUMCisco UTD Snort IPS Engine Software for Cisco IOS XE Software Security Policy Bypass and Denial of Service VulnerabilityEPSS 0.4%