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-2026-4391MEDIUMTeamSpeak 3 Server ECC Key heap-based overflowEPSS 0.7%CVE-2023-35374HIGHPaint 3D Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-27091HIGHOpenH264 Decoding Functions Heap Overflow VulnerabilityEPSS 0.7%CVE-2025-20680CRITICALIn Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilEPSS 0.7%CVE-2026-33984HIGHFreeRDP: ClearCodec resize_vbar_entry() Heap OOB WriteEPSS 0.7%CVE-2023-36771HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-36772HIGH3D Builder Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-59134HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.7%CVE-2026-61363HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-4504HIGHOpenPrinting CUPS/libppd Postscript Parsing Heap OverflowEPSS 0.7%CVE-2023-36740HIGH3D Viewer Remote Code Execution VulnerabilityEPSS 0.7%CVE-2023-36739HIGH3D Viewer Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-64693CRITICALSecurity Point (Windows) of MaLion and MaLionCloud contains a heap-based buffer overflow vulnerability in processing Content-Length. ReceiviEPSS 0.7%CVE-2023-20081MEDIUMCisco Adaptive Security Appliance Software, Firepower Threat Defense Software, IOS Software, and IOS XE Software IPv6 DHCP (DHCPv6) Client Denial of Service VulnerabilityEPSS 0.7%CVE-2025-1176LOWGNU Binutils ld elflink.c _bfd_elf_gc_mark_rsec heap-based overflowEPSS 0.7%CVE-2025-57740MEDIUMAn Heap-based Buffer Overflow vulnerability [CWE-122] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below,EPSS 0.7%CVE-2024-43526MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-40930HIGHJSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impactEPSS 0.7%CVE-2024-43525MEDIUMWindows Mobile Broadband Driver Remote Code Execution VulnerabilityEPSS 0.7%CVE-2025-62220HIGHWindows Subsystem for Linux GUI Remote Code Execution VulnerabilityEPSS 0.7%