Weaknesses of type CWE-787

5,212 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-2026-20745HIGHOut-of-bounds write for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow a denial of service.EPSS 0.2%CVE-2024-20132MEDIUMIn Modem, there is a possible out of bonds write due to a mission bounds check. This could lead to local escalation of privilege with no addEPSS 0.2%CVE-2024-54091HIGHA vulnerability has been identified in Solid Edge SE2024 (All versions < V224.0 Update 12), Solid Edge SE2025 (All versions < V225.0 Update EPSS 0.2%CVE-2024-20131MEDIUMIn Modem, there is a possible escalation of privilege due to an incorrect bounds check. This could lead to local escalation of privilege witEPSS 0.2%CVE-2025-52939CRITICALPotential heap-buffer overflow vulnerability in NotepadNextEPSS 0.2%CVE-2024-20133MEDIUMIn Modem, there is a possible escalation of privilege due to an incorrect bounds check. This could lead to local escalation of privilege witEPSS 0.2%CVE-2026-19885HIGHOriginLab Origin Viewer OGWU File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.2%CVE-2026-59146HIGHData::SpatialHash::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via unvalidated bucket, link and free-list indices in sph_walk_cell and sph_alloc_slotEPSS 0.2%CVE-2024-27365MEDIUMAn issue was discovered in Samsung Mobile Processor Exynos Exynos 980, Exynos 850, Exynos 1080, Exynos 1280, Exynos 1380, Exynos 1330, ExynoEPSS 0.2%CVE-2024-39816HIGHArkcompiler Ets Runtime has an out-of-bounds write vulnerabilityEPSS 0.2%CVE-2026-16914MEDIUMVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.2%CVE-2023-20945HIGHIn phNciNfc_MfCreateXchgDataHdr of phNxpExtns_MifareStd.cpp, there is a possible out of bounds write due to a missing bounds check. This couEPSS 0.2%CVE-2026-55586MEDIUMSumatraPDF: Heap out-of-bounds write in vendored CHMLib LZX Huffman table construction reachable from crafted CHM filesEPSS 0.2%CVE-2022-42542MEDIUMIn phNxpNciHal_core_initialized of phNxpNciHal.cc, there is a possible out of bounds write due to a missing bounds check. This could lead toEPSS 0.2%CVE-2026-33144MEDIUMGPAC MP4Box Heap Buffer Overflow Write in gf_xml_parse_bit_sequence_bs (NHML BS Parsing)EPSS 0.2%CVE-2026-65344HIGHAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOSEPSS 0.2%CVE-2026-16951MEDIUMVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.2%CVE-2026-84515HIGHAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, mEPSS 0.2%CVE-2026-88390HIGHAn out-of-bounds write vulnerability in jslGetTokenValueAsString() in Espruino 2v29 (commit bffc6d0) allows crafted JavaScript input containEPSS 0.2%CVE-2025-59731MEDIUMHeap-buffer-overflow write in FFmpeg EXR dwa_uncompressEPSS 0.2%