Weaknesses of type CWE-122

3,189 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-2024-37977HIGHSecure Boot Security Feature Bypass VulnerabilityEPSS 1.1%CVE-2024-22532MEDIUMBuffer Overflow vulnerability in XNSoft NConvert 7.163 (for Windows x86) allows attackers to cause a denial of service via crafted xwd file.EPSS 1.1%CVE-2023-29073—A maliciously crafted MODEL file when parsed through Autodesk AutoCAD 2024 and 2023 can be used to cause a Heap-Based Buffer Overflow. A malEPSS 1.1%CVE-2025-59254HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2025-23123CRITICALA malicious actor with access to the management network could execute a remote code execution (RCE) by exploiting a heap buffer overflow vulEPSS 1.1%CVE-2025-29912HIGHCryptoLib Has Heap Buffer Overflow Due to Unsigned Integer Underflow in Crypto_TC_ProcessSecurityEPSS 1.1%CVE-2024-38051HIGHWindows Graphics Component Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-32093HIGHWindows Function Discovery Service (fdwsd.dll) Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2025-21413HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-21339HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-21409HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-21411HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.1%CVE-2025-62456HIGHWindows Resilient File System (ReFS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2026-25588HIGHRedisTimeSeries RESTORE invalid memory access may allow remote code executionEPSS 1.1%CVE-2026-20922HIGHWindows NTFS Remote Code Execution VulnerabilityEPSS 1.1%CVE-2021-21958HIGHA heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-craEPSS 1.1%CVE-2023-21783HIGH3D Builder Remote Code Execution VulnerabilityEPSS 1.1%CVE-2024-33429HIGHBuffer-Overflow vulnerability at pcm_convert.h:513 of phiola v2.0-rc22 allows a remote attacker to execute arbitrary code via a crafted .wavEPSS 1.1%CVE-2024-43480MEDIUMAzure Service Fabric for Linux Remote Code Execution VulnerabilityEPSS 1.1%CVE-2022-40655HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of NIKON NIS-Elements Viewer 1.2100.1483.0. UEPSS 1.1%