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-2026-56789HIGHRTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite CountEPSS 0.4%CVE-2024-25115HIGHRedisBloom heap buffer overflow in CF.LOADCHUNK commandEPSS 0.4%CVE-2026-56208HIGHLibaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap modeEPSS 0.4%CVE-2023-25897HIGHZDI-CAN-19520: Adobe Dimension USD File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-25890HIGHZDI-CAN-19493: 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-2023-25895HIGHZDI-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-2023-25898HIGHZDI-CAN-19521: 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-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-2026-8529HIGHHeap 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-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-2025-65085HIGHHeap-based Buffer Overflow in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt ShareEPSS 0.4%CVE-2026-45696HIGHOpenEXR HTJ2K decoder heap buffer over-read in ht_undo_impl() (DoS)EPSS 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%CVE-2025-56394HIGHFree5gc 4.0.1 is vulnerable to Buffer Overflow. The AMF incorrectly validates the 5GS mobile identity, resulting in slice reference overflowEPSS 0.4%