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-2025-26416CRITICALIn initializeSwizzler of SkBmpStandardCodec.cpp, there is a possible out of bounds write due to a heap buffer overflow. This could lead to rEPSS 0.4%CVE-2023-32643MEDIUMA flaw was found in GLib. The GVariant deserialization code is vulnerable to a heap buffer overflow introduced by the fix for CVE-2023-32665EPSS 0.4%CVE-2023-6349MEDIUMHeap overflow in libvpxEPSS 0.4%CVE-2026-54122HIGHWindows GDI+ Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40364HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-69479HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-69638HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 0.4%CVE-2022-42405HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is reEPSS 0.4%CVE-2026-32221HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-40363HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-20809HIGHWindows Kernel Memory Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2026-47635HIGHMicrosoft Outlook and Word Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-11580HIGHLuxion KeyShot ABC File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58530HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-58542HIGHWindows Media Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-26200HIGHHDF5 Affected by H5T__conv_struct_opt Heap Buffer OverflowEPSS 0.4%CVE-2026-34865CRITICALOut-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confiEPSS 0.4%CVE-2024-20785HIGHAdobe Indesign 2024 TIFF File Parsing Memory Corruption Remote Code Execution vulnerabilityEPSS 0.4%CVE-2026-34119HIGHHeap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WSEPSS 0.4%CVE-2024-41850HIGHAdobe Indesign 2024 TIF File Parsing Heap Memory CorruptionEPSS 0.4%