Weaknesses of type CWE-787

5,843 results

Escrita fora dos limites da memória

Ocorre quando o código escreve dados em um endereço de memória fora do intervalo alocado para uma estrutura (array, buffer, objeto). O programa não valida o tamanho ou índice antes de escrever, permitindo sobrescrever memória adjacente — causando corrupção de dados, queda da aplicação ou execução arbitrária de código.

Example

Um formulário web que copia o valor de um campo do usuário para um buffer de 64 bytes sem verificar o comprimento: se o atacante enviar 200 caracteres, a escrita invade a memória vizinha e pode sobrescrever um ponteiro de função ou variável crítica.

How to mitigate

Sempre validar tamanhos de entrada antes de copiar (usar `strncpy` em vez de `strcpy`, ou bibliotecas seguras como `bounds-checking`); usar linguagens com verificação automática de limites (Java, Rust); aplicar testes de fuzzing e análise estática de código para detectar escritas desprotegidas.

CVE-2021-31482HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.4%CVE-2021-31486HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.4%CVE-2021-31492HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.4%CVE-2021-31489HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.4%CVE-2021-31490HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.4%CVE-2021-45985HIGHIn Lua 5.4.3, an erroneous finalizer called during a tail call leads to a heap-based buffer over-read.EPSS 1.4%CVE-2022-2129HIGHOut-of-bounds Write in vim/vimEPSS 1.4%CVE-2024-23296HIGHA memory corruption issue was addressed with improved validation. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.4 and iPadOS 1EPSS 1.4%KEVCVE-2026-21413CRITICALA heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545 and Commit d20315b. AEPSS 1.4%CVE-2024-31002CRITICALBuffer Overflow vulnerability in Bento4 Bento v.1.6.0-641 allows a remote attacker to execute arbitrary code via the AP4 BitReader::ReadCachEPSS 1.4%CVE-2025-0624HIGHGrub2: net: out-of-bounds write in grub_net_search_config_file()EPSS 1.4%CVE-2023-27718CRITICALD-Link DIR878 1.30B08 was discovered to contain a stack overflow in the sub_498308 function. This vulnerability allows attackers to cause a EPSS 1.4%CVE-2021-24026—A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business forEPSS 1.4%CVE-2023-27719CRITICALD-Link DIR878 1.30B08 was discovered to contain a stack overflow in the sub_478360 function. This vulnerability allows attackers to cause a EPSS 1.4%CVE-2023-4154HIGHSamba: ad dc password exposure to privileged users and rodcsEPSS 1.4%CVE-2022-2210HIGHOut-of-bounds Write in vim/vimEPSS 1.4%CVE-2022-26768HIGHA memory corruption issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.4, watchOS 8.6, tvOS 15.5, EPSS 1.4%CVE-2023-5176CRITICALMemory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence of memory corruptionEPSS 1.4%CVE-2020-7524—Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (V5.0.0.7 and prior) which could cause Denial of Service when sendEPSS 1.4%CVE-2026-28972MEDIUMAn out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 andEPSS 1.4%