Weaknesses of type CWE-787

5,145 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-2024-54543HIGHThe issue was addressed with improved memory handling. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.6, macOS SeEPSS 0.8%CVE-2022-32885HIGHA memory corruption issue was addressed with improved validation. This issue is fixed in iOS 15.6 and iPadOS 15.6, macOS Monterey 12.5, SafaEPSS 0.8%CVE-2024-20308HIGHA vulnerability in the IKEv1 fragmentation code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacEPSS 0.8%CVE-2026-17157CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-16864CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2019-25628CRITICALDownload Accelerator Plus DAP 10.0.6.0 SEH Buffer OverflowEPSS 0.8%CVE-2026-17083CRITICALIBM i is Affected By Multiple Vulnerabilities in the Debug ServerEPSS 0.8%CVE-2026-16845CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-16913CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-16894CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-17141CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-17152CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-17122CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-16862CRITICALVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.8%CVE-2026-64769CRITICALAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 anEPSS 0.8%CVE-2026-54333CRITICALUEFI Firmware Parser: Stack out-of-bounds write in tiano decompressor MakeTableEPSS 0.8%CVE-2026-54334CRITICALUEFI Firmware Parser: Heap out-of-bounds write in tiano decompressor `ReadCLen`EPSS 0.8%CVE-2023-47455CRITICALTenda AX1806 V1.0.0.1 contains a heap overflow vulnerability in setSchedWifi function, in which the src and v12 are directly obtained from hEPSS 0.8%CVE-2026-8507CRITICALCrypt::OpenSSL::PKCS12 versions through 1.94 for Perl have out-of-bounds (OOB) write flawsEPSS 0.8%CVE-2026-64770CRITICALAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 anEPSS 0.8%