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-2025-23420LOWArkcompiler Ets Runtime has an out-of-bounds write vulnerabilityEPSS 0.2%CVE-2024-27387MEDIUMAn issue was discovered in Samsung Mobile Processor Exynos 980, Exynos 850, Exynos 1280, Exynos 1380, and Exynos 1330. In the function slsi_EPSS 0.2%CVE-2025-23240LOWArkcompiler Ets Runtime has an out-of-bounds write vulnerabilityEPSS 0.2%CVE-2018-9471CRITICALIn the deserialization constructor of NanoAppFilter.java, there is a possible loss of data due to type confusion. This could lead to local eEPSS 0.2%CVE-2021-47775HIGHYouTube Video Grabber 1.9.9.1 - Buffer Overflow (SEH)EPSS 0.2%CVE-2026-6040MEDIUMHeap use-after-free in ODF number-format blank-width parsingEPSS 0.2%CVE-2023-32472MEDIUMDell Edge Gateway BIOS, versions 3200 and 5200, contains an out-of-bounds write vulnerability. A local authenticated malicious user with higEPSS 0.2%CVE-2026-30981MEDIUMiccDEV has a heap-buffer-overflow read in CIccXmlArrayType<>EPSS 0.2%CVE-2026-31797MEDIUMiccDEV has a heap out-of-bounds read in CTiffImg::ReadLine()EPSS 0.2%CVE-2026-63272MEDIUMHeap buffer overflow in WMF text record importEPSS 0.2%CVE-2026-6045MEDIUMHeap buffer overflow in EMF+ gradient brush importEPSS 0.2%CVE-2024-36324HIGHImproper input validation in AMD Graphics Driver could allow an attacker to supply a specially crafted pointer, potentially leading to arbitEPSS 0.2%CVE-2026-21352HIGHDNG SDK | Out-of-bounds Write (CWE-787)EPSS 0.2%CVE-2026-63275MEDIUMStack buffer overflow in CFF font hint handlingEPSS 0.2%CVE-2026-8358MEDIUMHeap buffer overflow in spreadsheet tracked-changes importEPSS 0.2%CVE-2026-63274MEDIUMHeap buffer overflow in PDF import stream handlingEPSS 0.2%CVE-2024-31956HIGHAn issue was discovered in Samsung Mobile Processor Exynos 2200, Exynos 1480, Exynos 2400. It lacks proper buffer length checking, which canEPSS 0.2%CVE-2026-28662HIGHIn p2p_process_prov_disc_bootstrap_req of p2p_pd.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead tEPSS 0.2%CVE-2026-63276MEDIUMStack buffer overflow in CFF to Type 1 font conversionEPSS 0.2%CVE-2022-42503MEDIUMIn ProtocolMiscBuilder::BuildSetLinkCapaReportCriteria of protocolmiscbuilder.cpp, there is a possible out of bounds write due to a missing EPSS 0.2%